Congrats to the TokBox team. I know Jonathan Mumm (met him at a hackathon last year). He was an amazing dude, and one of the best developer evangelists I've had the pleasure of working with.
This is fantastic news, good to see this means these guys will stick around for quite a while to come. It's quite a remarkable service, I'm not aware of any embedded (unobtrusive) video chat alternatives aside from rolling your own Red5 servers and managing the load.
Best of luck to the ToxBox team! :D