I usually fan people back ,but some people only want loads of fans. Somebody fanned me I went to fan them back and saw they only joined the winx club spot and I never saw them contribute there. So,it is obvious if they don't contribute and never did anything they only want props and fans.
Trolls too. Trolls fan me and send me messages about why I like Taylor Swift cause I am from the UK Is shouldn't like Tay,I should like 1D. That is just one example of a real message I got.
Some people only fan me never post on my wall except they go can you fan this stuff ,so I can earn my fanatic or whatever.
So,I won't fan you if you really don't mean that you want to fan me,