Can't remember now, I get neg repped for a lot of things. Usually when my opinion is different from majority. The most annoying thing is that what they say in neg bar, could be simply posted in a thread. Some are short messages like "Idiot!" "Lol" and etc.
Once got neg repped in a suggestion thread. The OP post was searching for shounen so I gave huge list and someone neg repped me for not giving details... Why do I need to give details if OP is simply searching for any shounen? 0_o
In most cases people neg rep me without even reading properly what I wrote. In one of the threads I was slightly picking on weak MC, saying what I didn't like but what I understand and hope to see and had put myself as an example since I used to be bullied too so I know what it's like. In return I got neg rep saying "Don't look down on weak people!". Just WTF?! I was not bashing anyone there! All the person saw was me saying that MC is slightly annoying, nothing beyond that point. Those are the most frustrating neg reps -_-