You may have seen Outside.in somewhere else on the blogosphere today, but it’s a unique mashup between Google Maps, Blogs, Zipcodes, Event Listings and a bunch of other location-based technologies. You can search for activities by neighborhoods, by zipcodes, by place names, by addresses. It’s very extensible, but it’s far from perfect:

It seems that it puts Dupont Circle on the map where the White House is. It puts Capitol Hill in Northeast around H St. It doesn’t know anything outside the District (for some, this isn’t a problem, though…), and it certainly lacks some of the neighborhoods that aren’t the focus of a great deal of attention, which is a shame, but it’s a system that we can help fix, all of us in DC, by writing more about the city in which we live.

Now go check it out!