A few years back, before I even fully understood what social networking was, I was a member of several sites including MySpace, Friendster and Hi5.   I left these social networking sites behind when I joined Facebook a few years ago and, apparently, my decision to do so wasn’t entirely unpredictable.  This talk, by danah boyd (which I came across while poking around popular bookmarks on Delicious) provides an interesting overview and analysis of the “social media landscape where participation “choice” leads to a digital reproduction of social divisions.”