I sat on the homepage for a minute trying to think of something I wanted to buy. You should offer some suggestions.
You're making me choose a category before I see the results? And also confusing me with text about getting spammed? I think some UI to allow people to narrow their search like "Show more items like these" would be better.
Other than that, it's pretty good. I loved seeing pictures of the items when I hovered over them. I'm usually not concerned about where an item is located when I shop on eBay (since I usually just get it shipped), but this provides a sort of craigslist-style take on it.