If you sign up to play EA games through Microsoft's Xbox Live Service, Microsoft will provide your Xbox Live user account information to EA so that we can establish an EA Online account for you. You need an EA Online account to play EA's Xbox Live titles. By signing up to play EA's Xbox Live titles, you agree that Microsoft can transfer your user account information to EA.
Information collected will vary depending upon the activity and may include your name, e-mail address, phone number, mobile number, home address, birth date and credit card information. In addition, we may collect demographic information such as gender, zip code, information about your computer, hardware, software, platform, media, Internet IP address and connection, information about online activity such as feature usage, game play statistics and scores, user rankings and click paths and other data that you may provide in surveys or online profiles, for instance. We may combine demographic information with personal information.
News source: Dubious Quality