PC World has a list of "101 fantastic freebies" - downloadable software and online services. They are categorized by what they are used for, like "Security", "filesharing", "maps and directions", "photos and video" etc.
I have to give snaps to MizPee, for concept if not execution. The idea is that if you need to find a bathroom you enter the address of where you are and MizPee will direct you to a nearby clean facility. Fabulous idea! Problem is that the data is very sparse at the moment. Like if you need a bathroom in Pittsburgh forget it, the nearest thing one it will find will be in Cincinnati or Philly.
But you can add toilets and rate them too.