I've only been playing PBM games the past few years.
My brief experience started with Lords of the Earth where at one time I was in three games.
Now I am currently in one running two positions. I believe this is the only currently active LOTE game going.
I am also in the current Cruenti Dei game and find it suits my tastes even better than LOTE. The fantasy aspect plus the great story writing and topnotch people make this a very enjoyable campaign. There are several positions open and I highly recommend this game.
-Jester