I've thought at times a reputation system would help weed out the bad information from the good. It'd be especially useful to help calm hysteria. I've seen dozens of threads where one person (nearly always a newbie) makes a sensationalist claim. Someone then quotes it and adds on some other logical implication which makes it worse, and it quickly becomes "OMG Aplle is teh evil suxxorZ!" Worse, it's usually countered, not by something to the effect of "No, you and the person you quoted are mistaken. Claim XYZ is false, so you don't need to worry about ABC," but rather by "OMG Apple is God you worthless toad! In fact I heard <some other wildly inaccurate claim that is nearly the opposite of XYZ.> Which means you're totally wrong."
If people were able to voice their displeasure at both (in such a way that both were able to see the reaction without reading through the usually several-dozen page thread (ie, reputation - I think, though it might be in a hack, that vBulletin displays latest reputation received in the UserCP), and they accumulated little red pips as a result, it might incline them to install a filter between their brain and typing fingers.
As for the mods doing extra reading work, that's what the Report Post button is for.