I've open-sourced my little Google Maps email signup gizmo that I use on my live page and when visitors sign up for things (blogged about it here and here.) You can grab the script here:

Brad's Mappy Email Signup (google code project)

It's another quick and dirty project from Brad Labs, cleaned up a bit from my implementation of it. But it's been working very nicely and I'm super happy to have the data for live show planning purposes instead of relying on Eventful as a middle-man.

Since I've been going geo-crazy lately, here are some data pictures (wheee!!):

subscriber locations

Red markers for anyone who subscribed and entered their location in the past couple of days.

album sale locations

Blue markers for a couple years of album sale data.

subscribers and album sale locations

Not shown: Antarctica -- not big fans of mine apparently.

If you want to stand up and be counted, you can sign up on the Live page.