Word of mouth marketing: It's all about love
I do my food shopping at Stop & Shop (a East Coast chain) -- mainly because I can flip through the online weekly sales flyer. I click on the items that I want and they are added to my shopping list, which I then print. Now that you know, you may do your marketing at Stop & Shop also.
The really smart companies give people a reason to talk about their stuff, and they make it easy for that conversation to take place - more -