LJ Friendsmap
In a vain attempt to recoup rusty programming skills, I've recently created a "friendsmap" app that gets the locations of an LJ user's friends/friends-of, tries to work out said locations' latitude/longitude by querying Google and Multimap, and displays the result on a Google Map. Beta release is available (along with source code) here: http://rezendi.zigamorph.net/.