Groupon has already sold a wedding dress, so it was only a matter of time before Gilt sold a flash mob wedding proposal. A $20,000 flash mob wedding proposal. It takes place at Artisanal restaurant in New York City on December 12 (act fast!). Your fellow "diners" will actually be hired flash mobbers who will erupt into dance. Someone will video tape it, you'll go viral on YouTube — you know the drill.
If your significant other has informed you of an upcoming reservation at Artisanal in New York, be warned.