I just noticed a really nice feature about Scoble's Feedmap...
1) Go here.
2) Click on the page by the feedmap...not on it.
3) Hover your mouse pointer over the map so you get the Pointing Hand icon.
4) Use your mouse wheel to scroll up and down.
Results: You can scroll into street level, or out to half a state.
Only issue I've found with it is that if you scroll too fast, the scroll command goes to the page instead and your browser window scrolls.
Still, it's cool.