Raph Koster's new community building social MMO metaplace
went Open Beta yesterday. You could call it a 2d Second Life that runs in your browser or a Habbo Hotel with more freedom and customizability. There aren't that many subscribers yet, so you get to hang out with the devs listening to live streaming concerts.
The build tools are really user friendly. If you've played the Sims or Transport Tycoon deluxe (it does terrain deformation), you'll feel right at home. You can import images from the web, render isometric sprites from Google warehouse models or upload images from your hard drive. You get your own world of a limited size to build in for free, unlike SL.
If anyone joins up, feel free to add peter_devore as a friend, that's me. I would upload some pictures if photobucket wasn't such a dick. I've created a little Penny Arcade place here
, maybe you'll catch me on there tomorrow.