I've tracked them for a long time. They do a an amazing job of PR. Their product did not deliver anything for years but with the massive amount of cash they have, it was bound to get somewhere eventually. Today it's way beyond where it was when they were just delivering lessons over Adobe Connect a few years ago. The problem is that the entire time they've been talking the same talk. So it's hard to gauge at this point how good of a system they really have because when it was non-existant they talked about it the same way they talk about it now, $50 million in funding later. I do wish them luck and applaud them for having a big vision but it's hard to tell if the smoke and mirrors were ever replaced with anything meaningful.