How to sacrifice your online privacy for fun and profit

You have value–and not just as a good friend, loving family member, and upstanding member of society. You're also a valuable commodity that companies buy and sell. Your age, browsing habits, and friends lists are all hot properties. And yes, all this data is recorded, packaged, and sold to the highest bidder by your favorite websites.

Story added 16. February 2013, content source with full text you can find at link above.