"FootTraffic.com", a social network/foot traffic planning site.

The idea is that brick-and-mortar stores/restaurants/hairstylists/etc that are located close to one another can communicate and coordinate days of the year (or month) when everyone in the area who is participating offers some sort of discount or sample.

It incentivizes consumers to make a day out of going to an area of town that might not otherwise get a ton of business.

Could lead to an interesting community of people travel around the world exploring and going to FootTraffic days.