Mulling the problems of participation, I found myself on a sign-up screen for Second Life. World of Warcraft doesn't do a thing for me, but the Second Life approach provides a dynamic that could suck me in.
It isn't free. The Linden Lab people aren't in it for their health. Or mine. And there is a huge health issue associated with online games. If television is an energy drain that vacuums real life out of a room, then the interactivity of online gaming is a black hole.
Jeneane seems to be thinking about wading into Second Life and I've been following her everywhere for years.