TheGameIAm cites a Meagan McArdle article as proof positive to his point that we coastal liberal don't even realize that we look down on central state conservatives.
First, this is really an urban/rural argument. Major cities in the middle of America tend to vote and look and act more liberal, just like their coastal counterparts. Doesn't that mean that elites come from Rice and OSU as much as they do from Dartmouth and Yale?
Second, I think liberals know very well that they look down on rural conservatives. They see Obama losing primaries because people have "had enough of Husseins" and are worried about "secret Muslims" and the like and they think, "My god. Don't you people bother to look critically at anything?" The proliferation of glib assessments of serious and complex issues that popped up all over the Republican convention, "Drill! Baby, Drill!" and "Surge to Victory" don't help. So liberals know what they are doing.
Second, where is the moral equivalence? The rural conservatives have heaped the same negative stereotypes on liberals for years (see the swift boat campaign and the fact that they have turned liberal into a curse word). If you pick on liberals for this and not conservatives, you are buying in to precisely the stereotype you are fighting: "Hey liberals. Stop looking down your noses at these people or you will sink to their level." We think we are better than them, and they us. The blame lies equally.
Third, and this is why I am a Democrat: under Democratic values, the rural conservatives can continue to be conservative. They can believe what they want about life, guns, gays, and god without interruption and can practice their values at home and in their communities while liberal practice their values in theirs. Under the conservative ideology, the same rights are not extended to liberals. There is no gay marriage, there is no reproductive choice, and so on. Conservatives want to clamp down on these things as a matter of policy.
Now I understand that TheGameIam is a libertarian, so I am not calling him out on this issue. But his point is that liberals dislike rural-conservatives. I am just offering a reason why: it's because they perceive that those conservatives (and their "values" agenda) seek to impose on- and perhaps limit liberals' own values and way of life.