Facebook, Linkedin, tweet'er, and whatnot. I used to be on G+ but thats now away with the fairies. I do have a facebook page but hardly ever used it ditto Link'tin. I am just not all that much of a social networker. One thing that I do find interesting is pathological behavior and related studies. I do not, however, tend to take what people post on networks too seriously as there is often a tendency for people to be attention grabbers. It's not always a bad thing but been mislead can often lead to unintentional consequences.