I think there was a thread on this....but I did a search and couldn't find it...
I noticed there is a MTBI group on Facebook.....is it active?
It's called Typology Central, but I can't login to Facebook right now to link you because they're doing maintenance.
It should be active. It's at least used, although I don't think it's used too often considering that this site already does most of what people use Facebook for and then some on its own. Look at member profiles on this site, and then think of the old Facebook layout. Notice anything?