I've highlighted some of the important facets of these policies which in this case apply to all Amazon services alike, including their baby registry servce.
…If you do post content or submit material, and unless we indicate otherwise, you grant Amazon.com and its affiliates a nonexclusive, royalty-free, perpetual, irrevocable, and fully sublicensable right to use, reproduce, modify, adapt, publish, translate, create derivative works from, distribute, and display such content throughout the world in any media. You grant Amazon.com and its affiliates and sublicensees the right to use the name that you submit in connection with such content, if they choose
Information from Other Sources: We might receive information about you from other sources and add it to our account information
You can add or update certain information on pages…When you update information, we usually keep a copy of the prior version for our records.
Automatic Information
Examples of the information we collect and analyze include the Internet protocol (IP) address used to connect your computer to the Internet; login; e-mail address; password; computer and connection information such as browser type, version, and time zone setting, browser plug-in types and versions, operating system, and platform; purchase history… the full Uniform Resource Locator (URL) clickstream to, through, and from our Web site, including date and time; cookie number; products you viewed or searched for; your Auction history; and the phone number you used to call our 800 number. We may also use browser data such as cookies, Flash cookies (also known as Flash Local Shared Objects), or similar data on certain parts of our Website for fraud prevention and other purposes. During some visits we may use software tools such as JavaScript to measure and collect session information, including page response times, download errors, length of visits to certain pages, page interaction information (such as scrolling, clicks, and mouse-overs), and methods used to browse away from the page.
Information from Other Sources
Examples of information we receive from other sources include updated delivery and address information from our carriers or other third parties, which we use to correct our records and deliver your next purchase or communication more easily; account information, purchase or redemption information, and page-view information from some merchants with which we operate co-branded businesses or for which we provide technical, fulfillment, advertising, or other services (such as Target.com, BombayCompany.com, and DVF.com); search term and search result information from some searches conducted through the Web search features offered by our subsidiaries, Alexa Internet and A9.com; search results and links, including paid listings (such as Sponsored Links); and credit history information from credit bureaus..