I'm going to have to concur with this. I attempted to contribute to a number of subreddits over the past few years; some of my posts went up and got lots of up votes, so yay. On the other hand, posts in some other subs would immediately get rejected, and once I even got temporarily banned for my post. I had read and followed the sub rules to the best of my ability. I was left feeling like maybe the mods there just didn't like my sense of humor, or something... it was really weird.

So yeah... to take a slight twist on an old saying: everything in moderation -- including moderation.