It sounds like you wanted to help an LBS service in the wine industry, and the one you picked turned out not to have a sustainable business. Well, none of the LBSes are making money and when the VC wears off, Foursquare may be in the same boat. This is the risk of being an early adopter... it's a bummer when it doesn't work out but I don't see why you are A) surprised or B) angry.
I don't know anything specific about Scvngr's business, but I spent a good chunk of a year building an LBS (www.mobca.st, fwiw) that really doesn't have any financial future. If you are upset for after "investing" a man-month of thought and a few chats with industry bigwigs over $200 bottles of Merlot, consider a moment the disappointment that the Scvngr team must feel when they set aside the game they've poured their hearts into so they can get to work building a dumb Groupon clone. Your punishment doesn't even register.
When a product goes south, the stringed instrument which plays Ave Maria for you is limited to:
* Founders - Double Bass
* Employees - Cello
* Investors - Viola
* Paying Customers - Violin
* Everyone Else - AM radio, if you can get reception