I recently red an article on Ajaxian about a Craigslist Mashup. Take a look at this thing. This is awesome. I can’t stop using it. It’s so much better than craiglist by itself. It gives the google map, and remembers the last bunch of views.
The thing I don’t like is the visual design. It’s crowded. Where is the whitespace? It’s hard to read anything. Additionally, its all monotone. Dark Gray. They use a highlight in one spot, but it’s not enough.