Admittedly, this is one of our biggest challenges.
It's the classic chicken/egg problem (posting ideas and actually evaluating them).
Based on feedback (from this post, for example), we'd like to figure out exactly how we incentivize that "egg" side of the equation.
One idea was to have people post a (optional) perk with their idea (i.e. how we're letting anyone who signs up post a free first idea), but this may be hard for ideas that don't exist yet.
Another idea is to have a ladder of "I'll build X if Y sign up" so 1000 users interested gets you a basic web app, 10000 is iOS and Android, etc.
Outside of that, we're going to gauge the interest in the idea and translate that buying up traffic initially.
The last thing we want is a repository of awesome ideas and no one to evaluate them. Addressing that is a top concern for us as we build out the actual product.
Developer A posts there idea, and utilizes their social network to get feedback.
Developer A's social network looks at Developer A's project, then comments etc. then is forwarded to Developer B's project.
You will lose a lot of conversions between A and B, but it would add value to have completely outside people evaluating ideas and signing up for the email list.
You could create a system where the more people come through a link created by developer A, the more referrals they get. That would incentivize developer A to not be a free rider.
We intend to borrow some strategies that have made Kickstarter and other sites for funding projects successful. For example, we'll devote a lot of attention to making individual concepts easy to share, which will ultimately bring more users to our site. We'll also keep the process of viewing, commenting, and voting on ideas itself simple and enjoyable. Personally, I enjoy seeing what ideas people are thinking about or working on - it's one of the reasons I spend so much time on Hacker News :)
