> then still might come out ahead even with $0 or -$10/head After blowing an entire year's worth of advertising on a single promotion... Which is an awful ide

> then still might come out ahead even with $0 or -$10/head After blowing an entire year's worth of advertising on a single promotion... Which is an awful idea because a) advertising needs to be sustained; and b) Groupon users are a small subset of the local population that might be interested in your product.