http://zurb.com/tavern - for me it's just a tool for Zurb (studio) for positioning their site and creating some buzz around them. I personally can't say any bad word about Zurb or Tavern (forrst).
So basically you can answer questions, but only one per day (which makes me wondering why is there any limitation).
This is just what it looks like to me, just a feeling. Anyone has the same or is it just me?