I have a startup that is gaining some traction and I am taking the idea to communities across the web to gain feedback. The process is invaluable and positive for the most part. But as anywhere, there are trolls that come out to feed. Since this involves my business, I bite my tongue and don’t respond in a fasion that I would typically. But is it better to not respond at all and completely ignore them, or respond with rational and logic points which they will find hard to argue against?