I disagree. I know folks who just don't use computers (my grandmother, for one, is unwilling to pay for cable/satellite or internet - to her, they are luxury items and too expensive). They would never have voted for Obama to begin with, and were excited as heck over VP Palin. These folks, had never heard about the issues because the press never put them out in the main forums (print, t.v., and radio). Rush didn't even touch on the BC issue.
These folks stay as informed as they can within their means. I would not call these folks (i.e. my grandmother) useful idiots.
I disagree. Just because there is a 'good reason' that people are uninformed doesn't make them any less a useful idiot. If you haven't figured out by now that you aren't going to get unbiased information from media (conservative or otherwise), then you are a useful idiot.
Heck, everybody's got a 'good reason' for their ignorance. Only those who make the effort to educate themselves can escape being useful idiots.
In short, just because you have a 'good excuse' for being a useful idiot doesn't make you any less a useful idiot.