1) Change the subject line when you post to a thread.  It's simple.  Then, you'll save the rest of us untold clicks to see your mundane post which says "Great pic!"

2) When you post a short message, just put "eom" at the end of the subject line.  Again, pretty simple, so that if you don't actually have anything in the body of your post, we (who click with baited breaths to have you impart your wisdom) aren't disappointed when there's tumbleweed blowing around in there.

See?  Two very simple courtesies that EVEN YOU can extend to the community.  Why do I post this? If I saw a trash can tipped over, I'd pick THAT up, too.  It would be a small price to pay to make everything better in the community.