It is a common species of asshole found on youtube, there are several forms of youtube asshole:
1. Troll/Attention Whore - Fags who are aged 12 - 20, have too much free time on their hands, can't make any good combacks for shit, and go on alotta popular music videos and say shit like "this band is shit, i hate it, omg "
2. Fame Faggot - A popular douchebag ex. Fred, or tosh who thinks he's all that, and has alott of haters because he deserves them
3. The other person who wrote this same definition - because he doesnt try, acts like a douchebag, and i dont like him
many fangirls or YOUTUBE ASSHOLES will post stuff like "dont hate justin cuz he's better than u" or "ur just jealous"
these are actual messages i encountered for commenting:
1."i was gonna verbally tear your ass apart, but then i saw u were a kid so i didn't"
2."faggot get a life"