#IdeaNeedsHackers Have a good idea that you want to get some hackers on board with? Just put it out there and use the #IdeaNeedsHackers hash tag. You should state whether or not you can contribute to the development effort, or if this is just an idea that you want to kick out into the world and want others to run with.
Generally, this is an invitation for others to steal your idea and run with it, so you must be cool with that. This could be something that could make money or just be something that would make the world a better place. You just desire to have it exist, and want someone, anyone to build it or help you build it.