Why SMS coupons won't work(mobileinc.co.uk)
mobileinc.co.uk
Why SMS coupons won't work
http://mobileinc.co.uk/2009/12/why-location-based-couponingadvertising-wont-work-in-its-current-form/
1 comments
I think should be as simple as possible. http://dealbk.com let users get coupons via a smartphone, sms, and printed with a map. Whatever method that is easiest for the consumer will win.