The first phase of the project my team and I worked on during our Quebec City retreat has just gone live!
WordPress.com allows you to geotag your user profile and posts. That means you can assign an earthly location to your account and to each of your posts.
WordPress.com will soon launch a Geo Search feature that will allow people to find your posts based on their locations. To show up in the search results, you need to turn geotagging on and start geotagging your posts.
Source: http://en.blog.wordpress.com/2009/11/12/a-blog-near-you/
More coming soon on the geo-front.