Acting on Convictions

I have been reading a book by Wendell Berry called The Unsettling of America, culture and agriculture. Mr.Berry points out the fact that Americans (not just Christians or Agrarians) do a poor job of acting on their convictions. He used as an example some environmentalists groups that have their money invested in strip mines and pesticide companies. We are not much different. We love to talk about the evils of fractional reserve banking, but we take part in it every day. We may buy gold or silver, but very few of us use it to trade or barter with. If we are to build Covenant Agrarian Communities that are truly set a part and a Godly example of how to live, then I think we must eventually support some for of localized currency. One example that I found is the Liberty Dollar. I don't know if liberty dollars are the way to go or not, but they are a step in the right direction. As far as the world of investing goes, why not invest in our local communities instead of multinational companies; who have no vested interest in our ideas(and are working against us). I would be interested in any input or ideas.