what are các điểm thưởng for???? and If u get them what are they used for??

They're there so bạn can brag about it.
It can serve as a memory and such. It rewards a person so they know they are doing a great job contributing to Fanpop. That is, if các điểm thưởng are used correctly.

bạn don't use them for anything. bạn just get them if someone like your pic hoặc bình luận hoặc something like that... hoặc in competitions :D