I play, can't even remember how I heard of it but my girlfriend and I learned together a few months ago, I've just got another friend hooked on it too. Having SmartGo Kifu on the iPad and the free go Client from Pandanet has made it easier to learn.

Funny thing is, a co-worker caught me playing it, then while he was slaughtering me in a lunchbreak another couple of guys came out of the woodwork too ^_^

I find it very cool that there's just one piece that can be used for everything.