From the WikiPedia:
The term "w00t" is a slang interjection used to express happiness or excitement, usually over the Internet.
The site woot.com has become famous for offering "cool stuff cheap." Every day at midnight, a new item goes on sale (typically a nifty gadget which the manufacturer is clearing out of inventory). However many there are, when they run out, that's it for the day (even if that's at 12:01 AM). Here's a longer story about woot! from the Wall St. Journal.
Of course, now there really is "Woot for Wine" at wine.woot!
One of my favorite parts of the original woot! is the whimsical description of each day's offering. I am happy to say that wine.woot! carries on that tradition. It will be interesting to see RadCru's take on this (they launch this coming Sunday, July 10 - right now, the home page is just a signup).
Plus, wine.woot! offers you instant customer feedback (see this example for this MacRostie 2004 Paso Robles Syrah Quartet, including real-time sales information). This is hugely valuable to a winery marketer.
Even if you are pretty fat and happy with your sales, I strongly urge you to allocate some product to investigating the response from RadCru and wine.woot! ASAP. This may not be something you want to do for your wines, but you should definitely have a first-hand understanding about how this type of offering is changing the game. And with Intertia Beverage Group involved with the RadCru offering, I expect them to be active in talking to the marketplace (starting with their own customer base).