http://www.everyblock.com/
"The easiest way to keep track of what’s happening on your block, in
your neighborhood and all over your city — like restaurant inspections
in North Beach, crimes in the Loop or everything around 475 Kent Ave."
EveryBlock is a really cool mega mashup for hyper-localized news in
Chicago, New York, and San Francisco. It's lead by Adrian Holavoty,
who is also well known for building ChicagoCrime.org, one of the
original Google Maps mashups.
This is one of the best examples I know of the kind of tool that I'd
like MashableCity to enable. They've done some really neat stuff...
all the way down to rendering their own custom maps (http://
blog.everyblock.com/2008/feb/18/maps/), since apparently Google Maps
wasn't good enough for them. (No, really, I'm not being sarcastic
about this.... Google Maps really wasn't good enough for them!)
Definitely worth checking out the app as a source of ideas for what we
want to build here. Additionally, I bet that if we did the legwork to
make our Providence data very accessible to them, we could easily
convince them to make Providence one of their next cities.