Btw, I know it's empty but if you want to see how the search works and how the result page looks like (if you don't feel like you want to post something), try specifying "Aarhus, Denmark" (the place where I currently live) as an address and setting a price range from $1, you'll get some results.

Sorry, got it wrong :-) That's the way it works - you type in an address which becomes a search center. You can bring up a map (an icon on the right) and specify the search area (by changing the radius) but the address will always be precise.