Creating demand is hard. Filling demand is easier. Don't create a product, then seek someone to sell it to. Find a market - define your customers - then find or develop a product for them.
Tim FerrissI always point people to the article '1,000 True Fans' by Kevin Kelly. If you choose your thousand ideal customers or readers properly and find the single author blog that targets that audience, you never have to do any more marketing. You're done. That is a lesson that very few product developers and marketers have learned, and it's unfortunate.
Tim Ferriss