I'm sure one person, after hearing your idea, ran home and immediately started working on a competitor. Seriously though, the "startup guy" doesn't know much.

I'm sure one person, after hearing your idea, ran home and immediately started working on a competitor. Seriously though, the "startup guy" doesn't know much. Stealth mode rarely is useful — more useful is getting information and feedback from potential customers, suggestions from other (knowledgable) startup people, and getting the word out about your potential product to encourage critiques and even more feedback. Keep up the good work.