For some people, attention is a drug (and online, it can be profitable too). If an attention addict can't get positive attention they'll settle for negative attention. As they say, "There's no such thing as bad publicity."

Maybe I'm just a contrarian, but while everyone else stares angrily at the loud motorcycle driving down the street blaring horrible music, my instinct is to ignore them and starve them of the negative attention they are demanding.