McMohan - 4:57 am on Mar 26, 2010 (gmt 0)
Well, interesting. Incidentally a friend of mine and I were brainstorming this very recently. Not that I am technically gifted, thought there might be a way out to address the customization issue.
Say, you pool all the offers from different merchants in a database. Create application that lets a customer see on his/her smart phone, categorized offers from merchants based on his/her location. When he/she moves out another town, what s/he sees will be relevant to that town. Possible?