it doesnt prevent rating (seeee how the new system is a good idea now?) au commenting BUT wewe can ripoti the user should they write offensive comments. in majibu au foramu wewe can ripoti the response directly au if its on one of your images, video etc
copy and paste the url into the notes section when reporting the user. this way the f4 can be alerted to the persons behaviour. if they misbehave the f4 can warn them au if they REALLY misbehave ban them.
normally its best to just ignore weird people on the net. if they do get really creepy though wewe can always contact the f4. dont try to make matters into your own hands.
block
link and report
link