At first glance, a city joining Brightkite seems a little strange — where would a city check in if it doesn’t move? However, North Charleston’s Brightkite account could be brilliant. It could be used to check in at events at their exact locations, post pictures of those events, and create quite a marketing stream for the city. Right now it’s just notes being posted at City Hall, but I could see this being much, much more. This is the first municipal usage of Brightkite I’ve seen; I’ll be interested to find more. (You can also find North Charleston on Twitter.)