What about if you could get some customers through Twitter? That is the idea cremebruleecart had. It is a creme brulée expert that owns a Twitter account. Whereever he goes in San Francisco, he posts a tweet, to inform its followers where they could get their creme brulees.
I have found this information on Loic Lemeur's blog, where you can find this interesting Youtube video about the concept.
This is a concrete example on how to use Twitter to promote your products and to leverage your community. I believe Twitter could become a great way to communicate on flash promotions and discounts.
