We've gotten some incredibly useful feedback so far (lots of "Well, duh!" moments).
We certainly would be grateful for any feedback you have and would be glad to answer any questions.
On a different note: I actually need to recruit people I don't previously know to my team. Would it be possible to add a landing page for a team that signs up the person and then auto-ads them to that team. This would have a hard-to-guess URL, so I would have confidence that only people I recruited (or their friends) would show up.
Finally, I just need to ask, are you fans of http://www.mspaintadventures.com ?
I've seen mspaintadventures.com and was entertained... why? :)