None of which came from data mining and none of which are particularly unique to Facebook. Shego's 'unknown' online store is more valuable from a marketer's perspective, but no more worth the dollars spent on it than the ad I see at the bottom of the Halforums page that says "Baby Girl Photos Share Your Mom & Baby Photos Like The Johnson's Baby Page Today".Especially if one of my friends has given it the thumbs-up. The endorsements of acquaintances hold at least some level of value to most people.
All this is tangential to me real problem which I'm kinda glossing over. I don't think Facebook is worth anywhere near $100B.