This'll be interesting test of opinion around here. Are all ideas fair game to anyone who wants to try to better them? or do we feel uncomfortable with someone

This'll be interesting test of opinion around here. Are all ideas fair game to anyone who wants to try to better them? or do we feel uncomfortable with someone who not only copies your idea and undercuts you, but also promotes themselves with a direct comparison? What about when it's a product that we heard about here, and that a lot of us liked at the time? I'm in the latter half, FWIW, but that's probably why I'm unsuccessful. Common sense tells me that the former is technically correct, it just feels wrong.