There is a growing number of blogs that focus on various aspects of Korea in general and/or North Korea in particular. Among the ones that I take a look at from time to time are:
The Marmot's Hole: A good all-purpose blog on contemporary Korean affairs, culture etc. etc. GW North Korea even ranks a mention on this blog here.
NKZone: All North Korea, all the time.
One Free Korea.
Let us know what you've discovered on your own.