No, noe from me. I don't do Facespace or Twitter. I've actually gotten the "...for Dummies" books on Facespace and Twitter from the library to try and figure them out, and Still Don't Get It.
Howard "Schlock Mercenary" Taylor does, however, and offers up some thoughts on Why Google + Is Better Than Facespace.
Me, all that talk of In The Future There Will Be No Privacy gives me the creeps.