Speaking as someone with more than 1000 posts (if barely) who also joined around the time that a few people were just hitting 10,000 for the first time, I can tell you that, while there is a definite clique feel to parts of the boards, you can push past that by saying interesting things or, failing that, just not being a dick to people. Also, if you're primarily here to talk about the comic (which it looks like you might be, if you've read the whole thing 5 times) most of the people in the Comic Talk part haven't been around nearly so long.
So... er.... welcome and stuff.