Honestly, I think it's an Internet wide phenomenon these days. I think a combination of the economy in the toilet, the heat and allergies are making everyone pissy, so they figure if they can't say anything nice, they say it on the Internet. Additionally, I know a Vegas forum I'm on mentioned there volume is down b/c of fewer people going away, I think this might be effecting the DIS' numbers as well.
I myself actually got into a hysterical 'net pile on Hedy last night on a hair forum. You wish I was joking.