I quite enjoy this. It's been a few years since I've played chess. I've never been a great player, but I'm not terrible. We play these games by exchanging email with our moves, in the Algebraic System of chess notation. I've got a physical board for each game set up in order to keep up with what's going on. I've only messed up the notation twice so far -- once my physical board didn't match the true game board, and the second time I just plain typed the incorrect move. Both times, my opponent knew what I meant and corrected me, which was quite cool.
Like I said, lots of fun. It's pretty neat to really have the luxury of pondering the moves at a more relaxed pace, instead of sitting directly across the board from my opponent.