http://www.livejournal.com/tools/sixdegrees.bml
memcache makes this really fast (and just gets faster the more people use it) so we'll probably stick this at the top of userinfo.bml by default later.... if you're logged in, you'll always see the path from you to the user you're viewing. And maybe a little icon beside the path (footsteps?) which link to the above URL where we could add some extra options... showing multiple paths, etc.
