An interesting new community site launched this morning. And by community, I mean real community: the street you live on. StreetAdvisor is a place to rate your block and meet your neighbors.
The rating system lets you review your street on five main scales (vibe, wired, health, value, essentials), each of which has subscores (for example, the wired scale includes a cellular coverage score). That's a lot of ratings to give, but you can, if you want, just give the main overview scores.
You can also upload video tours of your street, which could be a great resource for people looking to move on to a particular street. It's usefulness, however, depends on people reviewing and rating their streets honestly. It also assumes that real estate pros don't try to game the system by artificially inflating streets on which they have houses for sale (or dragging down scores on streets where they don't). The co-founders told me that have measures in place are in place to help prevent that.
For residents of a particular street, the system's "StreetBoard" also serves as a local resource. It's a social network with an open message board ("StreetShout") for street-related discussion with your neighbors. It also has a wiki-like element: You can find the numbers of local services (police, doctors, post offices) or enter them yourself for others to see.