never occurred to me that problem
Have you ever had a thread you were staying away from but wanted to post in it..

Did it never occur because you never wanted to deny a thread's credibility?
If so, perhaps this is a very personal quirk and anomaly...
no i have heard others talk about this its called "feeding' a troll u are not the only one my amigo dmx

No, it's not only feeding a troll that I refer to. There are some honest folks on chess.com who create threads that I consider to be stupid, and I just don't regard the thread highly enough.
There are some threads that are good but contain posts from honest members who say something I think stupid, and I don't want to derail the thread pointing it out.
It doesn't just have to be trolls.
...because someone said something off-beat, but you didn't want to post there because you didn't want to give the thread credibility?
It happens to me sometimes, and I consider sending a PM, leaving it alone, or starting a new thread....
Most of the time I leave it alone, and I didn't think the post merited a PM.
So here we are.