I forgot Multimap maps non-physical locations. (I've also forgotton how to do it, and have moved house since.)

A new method for adding your weblog to Multimap maps, plus handy bookmarklets (I think I'm starting to obsess about linking virtual and physical spaces again).

I've been getting quite a few referrals from Multimap searches like this one in the last couple of weeks - good to see folk using their weblogs-by-location feature.