This type of censorship doesn’t come from the top down on the web but it is found on just about every site.
Even the “top rated” (and low rated) news items on Yahoo are spammed by liberals. They actively work to supress some news items (examples would be pieces on climategate, prolife photos, etc) by rating them high or low.
The reach is so far that to mount a comparable FReep to “right the wrongs” would require full time effort. Effort that could be spent much better doing something productive rather than trying to challenge the Pravda Media’s lies (lies by omission are lies too).
You are right that to FReep some sort of response wouldn't work but developing a relationship with a company providing such services would help in spreading the word that this is going on and help develop defenses and maybe even better corporate policies regarding the kind of false-abuse spam we're experiencing.
Talking about this in the open is very helpful, IMO.