I like a lot of it, but at the same time, much of it feels it's been taken (not improved upon) from the 37Signals book of design. From the sign up, to the various pricing options, the way the pricing options is arranged, through to the buttons across the site.
The video also feeds a bit "meh" i'm afraid. "Meaningful Discussion" in groups is beginning to sound very cliched.
You don't rate ReadWriteWeb or The Next Web? Read somewhere that RWW drove more traffic to a startup's website than TC. TNW has grown a ton over the last year.
Anyway, i suggest email them all and see who bites first.