I dm a 3.5 pbp on another forum, I think I'm doing well, and I've got some posative feedback, but somtimes I feel like I should take the party closer to the brink of tpk. I would gladly play in a pbp if the chance came up.
Just as a total aside, and in the interest of my fellow gamers' convenience ... but I do all my PbP gaming over at Role-Play Online. Features include:
Each game gets it's own sub-forum, over which the GM has full administrative rights;
Each game has it's own die-roller, which keeps a log of the past 20-odd rolls made;
Each player can have multiple characters at once;
Each character can have a separate description, character sheet (which the GM can set to be player-editable, or NOT), avatar image, and two-line "bio";
Threads can be posted to one or more Groups (1-9 plus A, B, C, D, E, and Z - the last being a lurker-only "purgatory" sort of group.) Thus, if the group splits up, then aside from OOC banter ... you can LITERALLY split the group up. You can also run Evil-vs-Good multi-party games.
Private messages between players and/or GMs - multiple recipients allowed.
Private lines in-line within non-private posts.
a lot of pseudo-html code options ... including the ability to create Tables.