MSN Virtual Earth is live

http://virtualearth.msn.com/

It's not as advanced as Google Earth yet, however it does run from a web browser. Which is cool. The aerial views are restricted to the USA, a few more steps behind Google, but I'm sure they'll get there. I'm looking forward to their "bird's eye" feature, which lets you look at maps from a 45 degree angle, instead of straight down.