If you're abusive; swearing, harrassing, bullying other users... If آپ use offensive content; offensive تبصرے (I guess) یا if آپ spam; آپ give someone an unnecessary number of props.
I'm not really sure, bot those are my best guesses :)
If you're worried, I'll warn آپ about these three known abuses that can be done on Fanpop.