I haven't picked a license (have to check that with Joshua first too), but the code ended up in an unrestricted subversion repository recently, so I might as well tell where. Beware that it's not "open source", so no using the code to setup your own site. Actually, you can't even take snippets of the code and copy it into your own systems. (Yet). That being said, it is at:
svn co http://svn.develooper.com/projects/geourl/trunk/ geourl
Before adding any new features, I'd like to get the outstanding bugs tackled first. (For example there's a bug that makes the /near/ page not show other weblogs at exactly your location).
If there's interest, I'll setup a mailing list for this...