I read Slashdot, Lifehacker, The Atlantic, Sherdog (yeah, I like MMA) and take a look at the main topics of Google News (US and my country's, Brazil) through my iGoogle page. Anything beyond that, I don't care.
I am ignorant of everything else only in the sense that I am ignorant of Soviet architecture: I am not supposed to know everything nor will I try to, so it is only natural to always be ignorant about something.
20 years ago I would be forced to read a whole newspaper daily just to find out these same things and would end up knowing more about things I don't care about? Bummer.