That's one of the things I do like about it. It's a content aggregator, but you can get very specific with what you want to view. My usual subreddits are my favorite sports teams, my hometown, and my college.
But again, the new-fangled way of presenting comments and replies in a dynamic, non-linear way just perplexes me. I find myself reading a reddit topic, reading the replies, then not going back to it later because I can't easily tell what comments have been added since I last visited.
As opposed to message boards like this one where it's always crystal clear what content has been added since the last time I was on.