"Radio offers the greatest proximity to shopping occasions".
(percent exposed to given media within the half hour that true shopping occurs)
Mobile/web app : 7%
Live TV: 2%
We use all the above except mailers & brochures. Still working on a "mobile app" for our (pretty basic) website. Also waiting for upgrades for our site.
I just thought I would throw this out for you to chew on. Clear Channel is Nationwide and is HUGE in all forms of media.
Thought? Ideas? Experience?