Hi Foodbme– point taken, although that’s not the business model.  Patrons would not be asked to “cough up” anything more.  Also, it would not be a hard sell.  Patrons would not be asked to do this by the restaurant, but they would be made aware of it by the option on the menu, and our own, separate marketing.  
 
Would that misconception be a main reason why restaurants are not more interested in hearing the idea out?  
 
Out of curiosity… why do restaurants entertain Groupon, Scoutmob, check-in offers on Foursquare and Yelp when these are so costly, but not willing to listen to a no hard cost option for marketing?