Can threads be hijacked?

sounds like a labor-intensive bother that would likely end up (in marginal cases) causing a lot of hurt feelings for people who don't think they are guilty of such diversions.

What? No pictures of waffles yet?  I'm a trifle dissapointed.....

This is a tough one, because  I feel some topics are just not going any where, so some one replys with a "funny", and off it goes in a different direction. How the human mind works and views a subject can be very diversified, so what are you saying we should now burden moderators to look for topics that drifts and then do what?  I think many posters are greatful that some one replyed!  Are you personally having problems with your post? Talk to the man and as they say block offenders 

trifle disappointed