Demetri Martin discusses what's wrong with "Social Networking". OK, he's talking about kids and it's parody, but the same concepts apply to professional "Social Networking". And it's all enhanced by the fact that it's being presented by an adult with a bad haircut, acting like a kid...and not the smartest kind of kid at that.
Meanwhile, I'm still getting LinkedIn requests to connect to people I don't know. Luckily, none of them are named SparkleBunny.