[kevan]

This already exists, but I can't remember the name. In the last month or two there was a Show HN for matching small business and potential customers. The idea was that customers pledge what they're willing to pay (e.g. I will pay $X per month for Y service), and anyone looking to build a small business could find pre-validated markets to work on, lowering entry risk.

[spurlock]

Is it this?

https://www.demandrush.com

[kevan]

Yep, that's the one. I hope it works out, building something is a lot less stressful knowing you already have your first 5/25/100 customers.