One of my favorite political and social commentators, David Goldman, aka “spengler” - has written about this Facebook IPO, which sums up everything nicely
http://atimes.com/atimes/Global_Economy/NE22Dj03.html
The article does a good job of articulating what I have believed for a long time:
Google really KNOWS us...our search history reveals all our dirty secrets. We forget we are being watched, and let it all hang out....and Google will send targeted ads, matching our proclivities.
Facebook, however, only knows the ‘dating website’ plastic banana version of us. We only reveal what we want to...and the targeted advertising hits precisely in the wrong place.