I’ll let the cat out of the bag just a little bit by saying that the issue is not selective blocking of blogs, it’s the selective unblocking of blogs.
A grand conspiracy at the top of DOI is unlikely. If they wanted to screen out conservative content — say, in order to keep their employees from learning about the Harry Reid caper — they could block all blogs, just as the other federal agencies are doing.
On the other hand… the higher-ups in the Department of the Interior are not getting good information from their subordinates.
Go and read the rest. Make sure to leave a comment!
Update: Danny Glover from National Journal has written on this topic at his blog, and also has a fuller explanation about the issue from Frank Quimby at Interior here.