This is really great, and I still owe you a review for Salesforce. Have you spoken to the vendors about this, I know for something as potentially powerful as this is they would be keen to get their customers to proved reviews - which already happens to various other sites.
Wish i could make this but Thursdays are a bad day fro me to travel, I have however recommended one of our customers to attend as they're looking at launching their own community now, on Salesforce too. Hopefully someone will be able to come down.
There's always plenty of that to fall back on - I do my best to avoid it for as long as I can!