When I first got hooked on Facebook, back at the end of 2006, I was addicted to the fact that YES I was getting back in touch with people who I had not seen for years. Over the last few months though I too am getting friend requests from people who I'm sure don't even know me, they know of me. A friend through a friend type scenario.
Facebook has definetly broken down the barriers so much so that you can virtually HUNT and yes I mean HUNT anyone down and add them as a friend. It has gotten to the point where I am rejecting people left, right and centre because I do not need anymore friend facebook and like you do not wish for alot of those people knowing what I am doing.
I feel that the friendships I have acquired through the presence of Facebook have been forced upon me by the software itself, rather than me having control over who can see and access my profile. Sure their are privacy settings to restrict what people can see, but if my memory serves me correct - the ability to do so was implemented after the conception of Facebook, when the creator decided to give some of the creative control over to the users (Kirkpatrick, 2007).
Hopefully, as users continually push the evolution of technology we will push Facebook into enabling us to decide our online communities.
Kirkpatrick, D. 2007. Facebook’s new face. (accessed May 13, 2008).http://money.cnn.com/2007/05/24 /fastforward_facebook.fortune/