In this case, it's really irritating to hear someone play devil's advocate, because you know as well as the rest of us do most of these "ideas guys" don't offer much in return. If they had real domain specific knowledge, big time connections, or heck.. even capital, that'd be a different story. But let's please be honest here - self proclaimed "ideas guys" are looking for free or dirt cheap labor.
I'm sorry you're irritated, but have a little empathy for business guys. Have you ever tried to hire a programmer? It seems like sturgeon's Revelation applies: 90% of everything is crud, and 99.99% of the self-proclaimed anything-guys (business, ideas, programming, investing, whatever) are full of it.
