FeedMap lets you create a little map image based on the location you provide in a blog. I thought it would use the GeoTags that can be added to the META Tags of a webpage, but while submiting a blog feed it asks for either an address or latitude/longitude coordinates.
Click on Submit Blog under Options on the right navigation bar. In the same page you first provide the URL for your blog's feed. Enter a blog XML feed address, for example in my case the URL I get from FeedBurner's RSS 1.0 feed:
http://feeds.feedburner.com/JeepxGpsDiscoveries.rss.xmlProvide an address or latitude and longitude and your will be provided with a little code snippet that can be added to your page. Check the bottom right on this post to see it. You can check which blogs are around and events. It makes use of the MapPoint API provided by Microsoft.