The key to evangelism is a great product. It is easy, almost unavoidable, to catalyze evangelism for a great product. It is hard, almost impossible, to catalyze evangelism for crap.
Guy KawasakiPeople are free or cheap. Marketing: using Twitter or blogs. Cheap or free. Infrastructure: call up Amazon, call up Rackspace, terabytes of data in the clouds, thousand dollars, two thousand dollars.
Guy Kawasaki