"...because most of them are hobbyists.." Kaching - jackpot.Of course, membership in either group doesn't necessarily define what type of comments people want but the generalization is probably pretty valid in many cases. More generally, I think that much if not most most of the tension and contention that crops up here is a result of the different perspectives and attitudes of those two groups. I have only half-baked sociological theories, no answers.

"Democracy is a pathetic belief in the collective wisdom of individual ignorance." - H. L. Mencken