Information Density: Google Books – Signal Evidence & AI Readability

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[H1]
About Google Books

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Search
Book Search works just like web search. Try a search on Google Books or on Google.com.
When we find a book with content that contains a match for your search terms, we'll
link to it in your search results.

Visit Google Books

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Browse books online
If the book is out of copyright, or the publisher has given us permission, you'll be
able to see a preview of the book, and in some cases the entire text. If it's in the
public domain, you're free to download a PDF copy.

Learn more about the different views

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Buy books or borrow from the library
If you find a book you like, click on the "Buy this book" and "Borrow this book" links
to see where you can buy or borrow the print book. You can now also buy the ebook from
the Google Play Store.

Shop for books

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Learn more fast
We've created reference pages for every book so you can quickly find all kinds of
relevant information: book reviews, web references, maps and more.

See an example

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Where do the books come from?
Currently, we are connecting readers with books in two ways: the
Partner Program and the
Library Project.

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Watch a video about the 15th Anniversary of Google Books!
Watch on YouTube

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Search for, read and download more than 10 million free books!
See Details

About Google Books
• Overview
• Blog
• User Stories
• General Help
Partner Program
• For Publishers & Authors
• Join Now
• Partner Help
Library Project
• Overview
• Library Partners
• Librarian Help
Perspectives
• What's the Issue?
• Facts & Fiction
• Legal Analysis

[H3] Google Play - Privacy Policy for Books
October 13, 2011 | View archived version
The main Google Privacy Policy describes how we treat personal information when you use Google's products and services, including Google Play. This additional policy for books on Google Play does three things: (1) it highlights key provisions of the main Google Privacy Policy in the context of books on Google Play, and (2) it describes privacy practices specific to books on Google Play.
[H3] Key provisions from the Google Privacy Policy
All of the provisions of the Google Privacy Policy apply to books on Google Play. Among other things, this means:
We do not share your personal information with third parties, except in the narrow circumstances described in the Privacy Policy, such as emergencies or in response to valid legal process. For purchased books, we provide publishers with sales information, but do not provide personal information. For purchased books where we acted as the publisher's agent, we provide the publisher with information on the taxes we collect including the state, city and zip code from the purchaser's billing address. Google offers books for sale not only from Google Play, but also through resellers as well (for example, for purchase off a reseller's website or reading device). Also, our application developer partners use Google services to integrate with Google Play and provide you access to books from Google Play on their services. When you purchase a book through a reseller or use services of an application developer, you will need to log in with your Google Account information or create a Google Account if you don't have one. Once you have logged in, if you choose to synchronize your Google Play account with your account with the reseller or application developer, we will share information about your books on Google Play (e.g., all of your library shelves, titles, annotations, last five pages read for each book), except information regarding the seller(s) from whom you purchased your books, with the reseller or application developer. The application developer's or reseller's treatment of that information (and any other information you submit to the reseller or application developer directly) will be governed by the application developer's or reseller's privacy policy, not ours; please make sure to review any applicable privacy policy when you choose to purchase through a reseller or use services of an application developer.
When you use books on Google Play, we receive log information similar to what we receive in Web Search. This may include information such as the query term or page request (which may include book titles or specific pages within a book you are browsing), Internet Protocol address, browser type, browser language, the date and time of your request and one or more cookies that may uniquely identify your browser or your account.
Unless you are logged into your Google Account, your activity on Google Play will not be associated with your Google Account.
You may choose to use optional features within books on Google Play (such as My Library or purchased books) or other optional Google services (such as our Web History service) that require a Google Account and which may receive and store information from books on Google Play in association with your Account. Books features that store information with your Account will show you the information you have stored and allow you to delete it (unless we are required to keep it by law or for legitimate and limited business purposes such as fraud investigations). However, you will not be able to delete the record of your purchase transaction (including the title of the book) from your Checkout account history.
Google uses the information it stores for the purposes discussed in the Google Privacy Policy, including to improve our services (for example, to help customize recommendations for Google products or services you may be interested in), for security, and to report on aggregate user trends.
Usage data from Google Play is subject to the same security standards that are outlined in our main Privacy Policy.
[H3] Practices specific to books on Google Play product
The privacy practices that are specific to books on Google Play are:
To fulfill contractual commitments to rightsholders who license us books, we enforce certain security limits (for example, to prevent abusive sharing of purchased books and to enforce page view limits on some book previews), and we also enforce limits on the numbers of browsers or devices that can access an account during a given period of time. In order to enforce limits on numbers of devices, we will store the unique ID numbers of your devices on our servers. You can delete a device ID number when you wish to stop using that device.
You will need to have a Google Account in order to purchase books because account information is necessary to provide access to users who bought the book. We limit the information (such as books titles) we provide to credit card companies, and enable you to delete purchased books from your Google Account. However, you will not be able to delete the record of your purchase transaction (including the title of the book) from your Checkout account history.
In order to enable consistent reading position across devices and provide useful navigation within a book, we store the last five pages (only) in each book a user has viewed with the user's account. We also store pages viewed for security monitoring and/or if the user elects to use the Web History service.
Special legal privacy protections for users may apply in cases where law enforcement or civil litigants ask Google for information about what books an individual user has looked at. Some jurisdictions have special "books laws" saying that this information is not available unless the person asking for it meets a special, high standard such as proving to a court that there is a compelling need for the information, and that this need outweighs the reader's interest in reading anonymously under the United States First Amendment or other applicable laws. Where these "books laws" exist and apply to books on Google Play, we will raise them. We will also continue our strong history of fighting for high standards to protect users, regardless of whether a particular "books law" applies. In addition, we are committed to notifying the affected user if we receive such a request that may lead to disclosure of their information; if we are permitted to do so by law and if we have an effective way to contact the user, we will seek to do so in time for the user to challenge the request.
For additional information about books on Google Play and privacy, please see our FAQ.
©2011 Google - Home - About Google - Privacy Policy

[H2] Terms of Service
[H3] Welcome to Google Books!
The Google Terms of Services located at http://www.google.com/accounts/TOS apply to Google Books. For digital content you purchase through the Google Books service (the “Service”), you agree to be bound by the Google Terms of Services as well as these additional terms. The Google Terms of Services and these additional terms shall be the “Terms of Service.” Google may change the Terms of Service from time to time and post any modified terms at http://www.google.com/googlebooks/tos.html. You understand and agree that if you use the Service after the date on which these terms have changed, Google will treat your use as acceptance of the updated terms.
[H5] 1. Usage Requirements. To use the Service, you will need a compatible device, working Internet access, and compatible software. Your ability to use the Service and the performance of the Service may be affected by these factors. Such system requirements are your responsibility.
[H5] 2. Digital Content.
The Google Books Digital Content Store. The Google Books Digital Content store and our distribution partners enable you, subject to the restrictions set forth herein, to view, download, display and use on your devices, including but not limited to mobile devices, e-readers, and personal computers (each a “Device”) a variety of digitized electronic content, such as books, journals and other periodicals, and other digital content, as determined by Google ("Digital Content"). Google may change the entities from which you download Digital Content and through which your Google Books Digital Content transactions will be processed from time to time without notice.
Use of Digital Content. Following payment of the applicable fees for an item of Digital Content, for as long as Google and the applicable copyright holder have rights to provide you that Digital Content, Google gives you the non-exclusive right to download, subject to the restrictions set forth herein, copies of the applicable Digital Content to your Devices, and to view, use, and display such Digital Content an unlimited number of times on your Devices or as otherwise authorized by Google as part of the Service for your personal, non-commercial use. If Google or the applicable copyright holder loses the rights to provide you any Digital Content, Google will cease serving such Digital Content to you and you may lose the ability to use such Digital Content. For certain Digital Content, Google may be acting as an agent of the copyright holder (and its agents) in providing such Digital Content to you under the Terms of Service. You acknowledge that such copyright holder (and its agents) shall be the seller(s) of such Digital Content to you under the Terms of Service. Select, copy and paste functions may be available for some Digital Content, and you must use these features within the prescribed limits and only for personal non-commercial purposes.
Restrictions. You may not sell, rent, lease, distribute, broadcast, transfer, or assign your rights to the Digital Content or any portion of it to any third party except as expressly permitted by Google. Provided, however, that nothing in the Terms of Service shall prohibit any uses of Digital Content that would otherwise be permitted under the United States Copyright Act. In addition, you may not remove any watermarks, labels, or other proprietary notices on or in the Digital Content. If you have multiple Google accounts with different user names, you may transfer Digital Content out of an account and into another account, provided you are the owner of each such account and provided Google has enabled a feature of the Service allowing such transfers. You acknowledge and agree that Google may place limits on the number of Devices and/or software applications you may use to access Digital Content and that such limits may be set by Google at any time at Google’s discretion. You acknowledge and agree that Google may record and store the unique device identifier numbers of your Devices in order to enforce such limits.
[H5] 3. Security; User-Submitted Content.
You understand that the Service and Digital Content provided through the Service utilize technology designed to protect the security of digital information. You may not attempt to, nor assist or encourage others to, circumvent, disable, defeat, reverse-engineer, decompile, or tamper with any of the security features or components related to the Service or Digital Content for any reason. Violations of security features may result in civil or criminal liability. You may not access nor attempt to access a Google account that you are not authorized to access.
The Service offers features that allow you to submit, post, or display comments, information, materials, links, and other similar content (collectively, “User Content”) on areas of the Service accessible by others. You represent and agree that any use by you of such features, including your submission, posting, or display of any User Content and any use you make of User Content submitted by others, shall be your sole responsibility, shall not infringe or violate the rights of any other party or violate any laws, contribute to or encourage infringement or other illegal conduct, or otherwise be obscene, or objectionable, and that you have obtained all necessary rights and licenses with respect to such User Content. You further agree to provide truthful and complete information in connection with your submission, posting, or display of any User Content on the Service. Moreover, you give Google a perpetual, irrevocable, worldwide, royalty-free, and non-exclusive license to reproduce, adapt, modify, translate, publish, publicly perform, publicly display, create derivative works of, and distribute any User Content that you submit, post, or display on or through, the Service, without any compensation or obligation to you.
Google reserves the right not to post, display, or publish any User Content, and to delete, remove or edit any User Content submitted, posted, or displayed by you on areas of the Service, at any time in its sole discretion without notice to you or liability to Google.
Google has the right, but not the obligation, to monitor any User Content submitted, posted, or displayed by you on the Service, to investigate any reported or apparent violation of the Terms of Service, and to take any action that Google in its sole discretion deems appropriate.
[H5] 4. Payment.
Payment for Digital Content. You agree to pay for all Digital Content you purchase through the Service, and for any additional amounts (including any taxes and late fees, as applicable) as may be accrued by or in connection with your use of the Service. You are responsible for the timely payment of all fees and for providing Google with valid account and other details necessary to process payments. You may return Digital Content you purchased from the Google Books Digital Content store to Google for a refund if the Service does not perform as stated with respect to that purchased Digital Content, provided Google receives your refund request within 7 days of purchase. Following Google’s provision of a refund to you, you will no longer have the right to access the applicable Digital Content. For Digital Content purchased from Google’s distribution partners, the refund policies of such distribution partners shall apply.
Right to Change Prices and Availability of Digital Content. Prices and availability of any Digital Content are subject to change at any time.
[H5] 5. General.
Usage Information. The Google Books Privacy Policy (http://books.google.com/googlebooks/privacy.html) describes how we treat personal and certain other information generated by your use of the Service.
Service Changes. Google shall have the right to suspend, modify, or discontinue the Service at any time without liability to Google. If Google elects to discontinue the Service, it shall, if permitted by law, provide prior notice to you of the discontinuance in the event that you wish to download purchased Digital Content in your account. Additionally, the copyright holders of Digital Content may update such Digital Content and change digital rights settings for such Digital Content from time to time.
Termination. If you fail to comply with any term of the Terms of Service, Google may automatically terminate your rights hereunder, including revoking your access to the Service or Digital Content, without notice to you and without refunding any fees paid by you. Google's failure to enforce any term of the Terms of Service will not constitute a waiver of any of its rights or any terms of the Terms of Service.
Amendment. Google may amend the terms of the Terms of Service at its sole discretion by posting the amended terms on its website. Your continued use of the Service after seven days following the date such amended terms are posted will constitute your acceptance of and agreement to be bound by the amended terms.