Promoting an idea on the Web

Let's say that you have a new idea that you would like to promote. You want to introduce people to your idea, get comments and see how much the idea spreads. It could be something totally normal (a new way to save the whales) or totally outlandish (a new way to create a perpetual motion machine). If so, then one way to promote the idea is to use the Web.One of the best examples of a