Here's a video against Nader, and, in effect other third parties from 2008. It states: "It's not that bad, doesn't Obama make you cry sometimes? He totally makes us cry sometimes. But maybe that's the lesson of 2000: Vote strategically and practically, not an expression of emotion or high minded principle."
Obama never made me cry, but he has made victims of his policies cry. But you should vote strategically and that doesn't just mean backing the establishment Democrats --VotePact.org says disenchanted Demorats and disenchanted Republicans should pair up and both vote for the non-establishment candidates they actually want. So, yes, real strategy, not dumb non-strategy.