http://www.rpgmp3.com/downloads/data/av-deadalewives-dnd-part-1-stream.mp3
The problem with forum RP is that you don't have a way (like dice rolls) to determine the success or failure of an action.
I've participated in my share of free form forum-based RPGs in the days. If you have a group of people desiring to write an interesting story together, then it can work just fine. You do, however, tend to have people now and then who like to "god mode", usually without realizing how poor form it is.