This is a really awesome idea. I'd love to see this spread out of Virginia, too.
It seems like the easiest way to keep prices updated would be to have an iPhone and Android app (or maybe just a good mobile site) where users or store owners looking to drum up business could add prices for new specials, flag expired specials, etc. Similar to the way Google Maps stays up to date.
Also, does anyone have any insight into just why beer prices are so incredibly variable? It's not uncommon for prices to vary by 50% between nearby stores or even at the same store, depending on the day.
the problem with virginia is the ABC regulations. we are looking to expand outside of the state soon - maybe DC, charleston SC?
Native apps with location-aware deals are on the way (we hope to even collect data on what you like to drink via webcams mounted directly in your fridge or facial recognition at bars themselves. are we kidding?!?!)
And it's 60 degrees, blue skies, and sunny in Portland at the moment. Just saying ;)