If you're abusive; swearing, harrassing, bullying other users... If আপনি use offensive content; offensive মতামত (I guess) অথবা if আপনি spam; আপনি 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 আপনি about these three known abuses that can be done on Fanpop.