To make utterly worthless and inane posts on an internet messageboard.
stuff post tend to envolve two or more users going back and forth talking about nonsense that does not have anything to do with the topic.
Examples of stuff post
(Note that, these post had nothing to do with the topic which was, someone being someone else.)
I'M GOING TO MURDER YOU
forget you. Pandan loves me more than you. >:c

I SAW YOU WITH THAT WHORE!
STAY TUNED TO FIND OUT WHO THE WHORE IS!

Seriously, you all need to stop spamming up topics with your stupid stuff and go talk in a chat room or something, I'm tired and I'm sure others are, of most of you doing this kind of thing.