Very nice article on the lack of privacy on Facebook, (or pretty much anyplace else)

http://www.msnbc.msn.com/id/34825225/ns/technology_and_science-tech_and_gadgets/

I think the real point is that to achieve a level of privacy that you had, say, pre-Internet, then you have to stay off of the Internet. The control of technology and the focus of it is based on various elites gaining information from and/or power over the users. My personal policy has always been to put no more on Facebook, or anyplace else, than I am willing to see and to defend if it were put up on a huge billboard on Route 1.
Financial concerns are also important. But the fact of the matter is that even this data was widely available, even before the Internet. The number of people who (potentially) can get access to a check you wrote or a credit card slip at a box store is truly huge. You're only hope under such circumstances is to avoid those conveniences and return to cash and/or postal money orders.

(Thanks for the link, Mathew!)