Some nameless author over at Digital Podcast (I can't believe how many people don't have their names under their articles...weird) has written a little tutorial on shortening web addresses. This may seem arcane to some, but Mr. Nameless has a point when he says that podcast feed addresses should be short and memorable in order to pass around.
Personally, I don't see the point of all of this. If people ask for my podcast feed, I simply give them my main blog address and tell them that there are subscribe buttons on the page. I don't see a circumstance where I would be reading out some "really long URLs with lots of slashes and what not."
But I'm only one guy and maybe the rest of the world is different. if you're feeling a little intrepid and want to have the ultimate control over your feed url, the take a stroll over to Digital Podcast.