Ipod Evangelism is simply evangelism using an Ipod/voice recorder.  You can do the same thing with any voice recorder or video camera.  I find that it is sometimes easier to approach people with my ipod than with a tract.  You are also less likely to be hassled by security while at a mall than if you were leafleting. 
For other good reasons to use an Ipod while evangelising, go here. 

I have provided some audio files that might be useful to someone.  If you have any comments/pointers, please feel free to post them on the Message Board.