Dude. This is so awesome! I thought about making something identical to this but someone else beat me to it.
Check it out: Fat Fingers
Basically, the idea is, you can save money on ebay through people’s typos and misspelled words. For instance, if I was trying to buy a Cybershot digital camera, this search engine would search ebay using a wide variety of possible matches. I might find an obscure auction listed as “Cybershoot” that nobody else was bidding on (because they couldn’t find it through normal search methods)