Steven Johnson’s Outside.in just launched Radar, a tool that aggregates content based on it’s proximity to you.

Tell us where you are, and Radar shows you what’s happening around you, at increasing levels of zoom: the 1000-foot scale, the neighborhood scale, the city scale, and “Everywhere Else” in the U.S…. Right now, we’re tracking blog posts, news stories, outside.in discussions, and Twitter tweats, and organizing them all both around specific places and topics.

Great concept, but seems like it might be better suited to delivery over a mobile device (sure that is probably in the works).

More generally, I love what Outside.in is aiming for in terms of location-based content tagging and using web-based social tools to strengthen local community-building. Maybe I need to spend more time using the site to develop a more comprehensive understanding of how it works, but it just doesn’t feel fully-baked yet. The different types of content (blog posts, news stories, users) and categorization/navigation schemes (places, tags, etc.) don’t quite integrate in a way that’s immediately intuitive for me. I think this is mostly an information architecture/UI-design issue, because the pieces all fit together conceptually. Will be interesting to see how the design/architecture of the site evolves.