Not as popular as social networks.
Plus, a forum's opinion on music is different than what people would say on Facebook and stuff. As is people's opinions on us.
For example - people on this website tend to dislike me, but these opinions aren't relevant to my real life at all

(I get that NOW...of course I didn't earlier this year as everyone here knows)
The same goes for LMFAO, Nicki Minaj, Carly Rae Jepsen, and so forth.
However, that might be different for other forums. Some forums might have a more popular opinion than Facebook or twitter. You won't see many people talking about Hurricanes or tornadoes unless it's happening to them, but you can talk about them a lot on Storm2K.
Same with JustUsBoys and GayTeenForum...but people are meaner on GTF than people on Facebook.