Having trouble reading this?

I often receive email that starts with this seemingly inane question. Probably you see this, too. I am tempted to reply: "Buster, if I'm really having trouble reading your email, I probably wouldn't be able to read your stupid question"... If I know the sender, and am glad to receive her/his emails, of course I'd never do that. Unsolicited commercial messages, however, do tempt me, but it's better to hit the "Delete" button--or even report it as spam. It reminds me of the classic photo of a sign that says: $50 fine for damage to this sign. And no other message. Aargh! Duh!