I threw together a quick demo

of the code demonstrated in the blog

 

My demo uses a SharePoint List to hold the data so you can try adding your own locations to the list at the bottom of the page.

 

This is similar to the other demo I created using the local.live sample http://www.wssdemo.com/demo which used client side script and the msxml object to call the SharePoint list web service to get the location data except that this new demo uses the Data View web part to emit the javascript to update the map.

 

I'm working on a Popfly block so that I can incorporate SharePoint data in a mash up (just using an RSS feed  was a bit too simple for me). Most of my time has been spent trying to keep at least 500Mb of free space on this server. WSSDemo.com only has a 36 Gb mirrored disk so if anyone has suitable disks for a HP ML 370 they wish to donate, I have 4 empty slots begging to be filled!