sorry to hijack the thread, but this is good stuff.
i've used this service in the past. it's a little creepy giving them your ebay credentials, but after i got over that, i paid like $5- for points, added the item i was interested in, and the highest i was willing to pay for it.
it automatically bids for you at the very end of the auction. i have won 2 auctions with it. (out of 2)
i would use it again for sure, but i rarely use ebay.
http://esnipe.com/