Google maps are certainly spawning some interesting uses. gVisit is an interesting little tool to see visually where your visitors hail from, and just today I found frappr via Asterisk and what a cool idea.
From their FAQ:

"Frappr is an online tool that lets you map out the zip code where you live, work, vacation, or anything else! You can then share your unique URL with friends and find out where the rest of them live and work in relation to everyone else."

So having to try it out myself, I've created a frappr map for elektrikink, put myself in as the first member and I would be just tickled if you'd care to add yourself and say "howdy!".