Yeah, sign up customers. If you need to do market research (and who doesn't) do it there, you have all sorts of potential customers in front of you. Ask them ev

Yeah, sign up customers. If you need to do market research (and who doesn't) do it there, you have all sorts of potential customers in front of you. Ask them everything you need to know, refine your idea, rethink some of your older assumptions. Just because you don't have a product doesn't mean you can't advance your business. So if you're going to go, make it worth it.