Try to be civil. Imagine that you are talking face-to-face with the person you are replying to. Would you being "Yes, moron"?
This newsgroup is becoming unusable, in part because it is overrun by cranks and in part because many people seem to be incapable of exercising good manners.
-- Do, as a concession to my poor wits, Lord Darlington, just explain to me what you really mean. I think I had better not, Duchess. Nowadays to be intelligible is to be found out. -- Oscar Wilde, Lady Windermere's Fan