Celebrity-Inspired Social Networking Sites

Celebrities have been diving into social networking in a big way recently, and with each launch it’s fairly obvious how much each one gets it.
These 15 celebrity-inspired social networks are examples of some of the good, the bad, and the ugly, with the celebrity involvement ranging from figurehead to hands-on social networking guru.
It also may be the first list in history featuring both Barry Williams (AKA Greg Brady) and 50 Cent (and quite possibly the last), so enjoy!