Well, of course they do. One of the best sources of ad data is social data. If you know where, when, and what someone likes, you can easily target them.<p>Don't ALL companies want you to be more involved with them?
><i>And you wonder why Facebook only allows you to take your personal data in the form of a downloadable .zip file rather than an ongoing stream you could simply hand over to someone like Google.</i><p>Facebook definitely doesn't have a publicly-accessible API for querying every piece of data a user has put on Facebook.