Padmapper is really awesome. I think one of the reasons it were so successful was that it gave an alternate (better) UI for apartment search.

People are visual and they know maps, but seeing lists is harder to parse.

The fact that nobody else at that time had put apartment search on a map is a great example of how low the bar is for excellence in this space (no offense, @padmapper).

>The fact that nobody else at that time had put apartment search on a map is a great example of how low the bar is for excellence in this space (no offense, @padmapper).

I'm pretty sure that housingmaps did it earlier. However, padmapper provided a much nicer experience.