The FAQ needs a link to pictures as to what CB can offer.

There should be a gallery of screenshots so people can see what CB offers right from the main page.

I looked amy my CB Login and found this stuff.

Messaging - Joomlapolis Post Office - Inbox (vbulletin has, most forum software as well)
Blog - most forums have good blogs.
Connections - this seems like something for kids.
Personal Info - already in vBulletin.
Joomlapolitan Card - I guess it would give you hypothetical access to other stuff on the site. Not sure what.
Zoom Gallery - for users to post pictures (most forums do this).
CB Lists - I see it's memberlists.
Submit A Web Link - needed, but most forum software has this stuff.

Overall, most forum software offers what CB offers thus far.