Check out expat forums--there are a whole host of countries (largely Latin American) where you can live there on a tourist visa; every 90 days you take a weekend trip to a neighboring country and get a new tourist visa. Since you have an online business you won't be working in the local economy so work authorizations and the like won't be a problem.

Also, these countries tend to be really cheap. I know a woman who lived off of blog revenue in Costa Rica; mostly affiliate links to online gambling, which isn't feasible ever since the US government outlawed online gambling.