just a suggestion - could you implement a search so that a user can specify what drinks they have access to and the site can suggest ways of mixing them?
a lot of people like myself are leaving ebay due to the large amount of negative changes they have made for sellers. please check ebays forums for the outraged sellers or somewhere like http://www.powersellersunite.com
The Halo image makes the text too hard to immediately read. I would trim the console pictures, the extra white around them makes the site look a bit amateur.
i like the logo and navbar.
I would consider registering a few dozen dummy users and generating conversations yourself. A forum is like a restaurant, if its empty people are more likely to go elsewhere.