The less people that vote the less the system is legitimized.
I'm going to have to call you "naive" here, sandinista.

The system does not care how many people vote. There would need to be a massive country-wide boycott of the election in order to make an election look illegitimate, which just is not going to happen. No, with the current system we have now the only way to affect change is through very hard work, something not exactly encapsulated by a couple of comedians at a rally with ambiguous goals. The Tea Party pushed the Republicans so far right, not with
apathy, but with a true belief in their cause. American "Liberals" are exactly how you described them: weak. They are disorganized and disillusioned. And while I agree with Stewart's general sentiment about the media, his rally couldn't have come at a worse time for the forces of sanity in this election. Anyway, the goal now should be a long hard slog to push the Democrats left of center, instead of allowing them to languish center-right where we've allowed them to drift over the last 30 years. Will The Coffee Party do this? No. They were so far up Stewart's nose on this rally thing it was disheartening. Liberals are taking all the wrong lessons from this electoral defeat, and they're lessons the Republicans and the Tea Partiers hope they learn.
The true lesson is the power of organization and common purpose. That's what won this election for the Republicans. And while the Democrats and "Coffee Party"-types stayed "reasonable" the Tea Party and Republican media machine curb-stomped them utterly. To any rational person a re-evaluation of tactics would be in order, wouldn't it? I thought after the drubbings the right took in 2006 and 2008 that they would re-evaluate their beliefs and adjust accordingly. I think this election proved just how wrong I was and just how much passion and organization can be a force for change (good and ill). The left needs to learn this lesson really fucking quick. Stop listening to the media shills and right-wing blogosphere harping about how the Democrats need to tack to the right. The media shills and left-wing blogosphere said the Republicans needed to tack left after their loss in 2008. Look how wrong they were. 50% of the conservative "Blue Dog" coalition was destroyed last Tuesday, while 95% of the Congressional Progressive Caucus was re-elected. Standing up for Progressive principles was victorious in the Democratic party, while wishy-washy corporatism did nothing to help those Blue Dog Dems. The course is clear for Progressives, and that is to stick with the Democratic Party and to push its course towards a New Progressivism for the 21st century.