I just found 3 nifty maps on Google Maps Mania. All three do something with eBay results & a Google Map. My favorite was the mapBid site it lets you search eBay with a zip code and then plots your results on the map … this one is the best laid out. The other 2 are similar. The uses Google Maps to show you bargains near colleges in the US. The lets you choose how you want your results sorted.
That being said … I have no use for these neat sites because when I shop on eBay I don't really care where my package is … just so long as it's the price I want to pay.