I don't use reddit so have a fairly basic understanding of how it works but looking at all these replies about subreddits, it struck me that basically reddit is a web2.0 version of usenet. So I guess that means good content is there, you just need to know where to look :)

P.S. for the redditors: I have nothing against reddit, it's just that I'm already drowning in information and never found the time to get in to it.