"a collective effort to help people discover new places and experiences anywhere in the world". A bunch of ex-Googlers are behind it. Heard described as "sort of like if Yelp and Lonely Planet had a baby".

"a service that enables you to connect, tag and share real time sensor data from objects, devices, buildings and environments around the world". Geowanking I can get behind.

"a clean-room implementation of Apple’s CoreLocation framework that is part of the iPhone SDK"

"Bookmark the real world". Has some mobile integration.

Find the best cell phone coverage in your area, or add your own cell phone signal to the map.

more Twitter mapping mashup fun

Free wedding maps, make your own map

all the maps

bounce around the globe as new Twitters come in

twitters on a map!

multi-provider Geocoding

Google Maps overlaid with Metro lines, plus a handy direction of stations

are you paying a reasonable rent for your area?

craigslist google maps = love