Social Networks Share Information Without Permission

Facebook caught sharing secret data with advertisers (arstechnica.com)
Facebook, MySpace, others, sharing personal information w/o permission (wsj.com)
Major social networks (yes, Facebook) sending data about you to advertisers (mashable.com)

Are people actually surprised when shit like this happens? What could make you possibly think that the valuable information that you gave to these companies (facebook, myspace, etc) would not be used by them for profit? No matter what a company says in their policies or EULA or whatever the present you with before taking your personal information, these companies will use your information for profit if they find that the reward is larger than the risk. Either they lie to you and do it behind your back (greater risk) or they simply say "fuck you" and change the terms that you both agreed on (if there was ever any actual agreement. This could simply have been a statement on their website, in which case it's not exactly binding) and share it anyway.

In short, if you can't stand loosing your personal information, don't give it to somebody else!