All must be willing to sign a NDA, prior to the discussion of project details.
Important:
3.
Announce your business plan. If you think your business plan has to be kept secret because otherwise others will steal it you are probably too stupid to be in business (not just BTC, but in general).
Let me explain to you how business "stealing" works: at the time MPEx was created (Feb 2012) there existed GLBSE already, which sucked at that time. Nobody flailing around in a cloud of stupidity almost mould-like in consistency seemed to be aware of it, but GLBSE sucked. And so Mr. P decided to make a securities exchange that worked right and was run correctly.
So, pro tip #1: there's so much to do and so few people capable of doing it in Bitcoin that if your plan makes sense and you seem even remotely competent everyone else who is competent
will breathe a sigh of relief. They aren't going to "steal" your idea of doing the absolutely fucking obviously banal, cause so much is needed I couldn't begin to tell you.
Pro tip #2: if you are incompetent, the people who are competent aren't going to steal your business early. They are going to steal it late, just like MPEx demolished GLBSE. They don't need early mover advantage, they will come to your market six months or a year late, break off your arms and beat you over the head with them until you are reduced to a bloody mess.
So, forget about anyone "Stealing" your business. When S.DICE was announced, a bunch of forum muppets rambled on about how it's not worth its valuation because "everyone could do it". And
I laughed at them then and so to prove my point that they're laughable idiots they declared that they shall do it! It's been months, who has managed to steal the business? You can't steal any business from the competent, and if you're competent yourself you don't even try to, cause it makes no business sense.
Thus, at the very least, step 3 gives you this measure of protection, whereby other competent people know you're doing X and so don't start doing X too. It saves our time and effort, rather than doing something twice do two of the fifty billion things that still need doing.
Obviously your announcement will gather a bunch of crap from a bunch of nobodies. But lucky for you, you've been doing this by the numbers, and you have the list. You know why you don't care what Joel Katz says about anything: what people who don't run businesses say is irrelevant. You know why you care what piuk says about anything to do with the blockchain (do you?).
Also, from the sounds of things what you are doing is fairly obvious. A good idea, certainly but not too hard to guess. Sounds like a prepaid card system for buying bitcoins and then redeeming them online. Not sure why you would need an NDA for that? Seems odd coming from you, you're generally one of the more sensible people on the forum.