SmallWorlds is about to launch — basically, it lets you make isometric multiplayer apartments and embed them on pages and link them. They are apparently planning on lots of Hollywood tie-ins. It will be interesting to see how this goes, given the similarities to Whirled, which has not set the world on fire yet despite being very cool. Using the “open big” estimation method and eyeballing their curve using the numbers they report on the site, they look to be on track to peak around 20-30,000 users unless they manage to crack another market or go viral. Naturally, we’re watching all this kind of closely since Metaplace bears some similarities to both of these.