You need to get some deals that: 1. Are so good people will tell their friends. 2. Appeal to a wide enough audience that all of your initial customers have at

You need to get some deals that: 1. Are so good people will tell their friends. 2. Appeal to a wide enough audience that all of your initial customers have at least one friend who would actually be interested. If you can convince a few retailers to make these kinds of deals with you, then you just need to get a core group of highly connected early users to start the word-of-mouth chain. If you have a popular Twitter account or blog, you're half way there. Obviously this is kind of chicken/egg, so you need good connections in the retail world, the kind who owe you a favor or take "incentives".