Was just made aware of SceneCaster.com. They've built much of what I've been planning for 88 Studios, but I believe that they're making one crucial mistake: over-complexity.
To get the thing to work, you have to download a massive ActiveX player - In fact, I couldn't get the application to work on my laptop - it just never loaded. I got it to work on my more powerful desktop computer. If you look at some of the comments in their Facebook app, you'll see that a lot of people are having just the same problem.
It's a great concept that makes the same mistake as Second Life. They've leapt too far ahead. They're implementing for a Web and user-base that doesn't yet (really) exist. Yes, of course, it can actually work in some instances - for dedicated computer users with a high degree of technical knowledge and commitment to learn how to use the thing. But you just can't expect this type of application to gain mass acceptance.
Things i like about it
* integration with sketchup warehouse
* integration with talking avatar system (forget what this provider is called)
* object inventory system
* easy texturing of objects
* facebook integration
* 2d wireframe view
The main problem:
* complexity