I have just launched a site today that can help with that. It's called WillThisFly?. It allows you to float your idea, get feedback and iterate until you have

I have just launched a site today that can help with that. It's called WillThisFly?. It allows you to float your idea, get feedback and iterate until you have something of value that is worth pursuing... or not: It means you don't have to spend time and money finding out the hard way. Check it out at http://willthisfly.net/projects/1/ http://willthisfly.net/projects/1/