Some research says that lurkers make up over 90% of online groups. I suspect that Less Wrong has an even higher percentage of lurkers than other online communities.
Please post a comment in this thread saying "Hi." You can say more if you want, but just posting "Hi" is good for a guaranteed free point of karma.
Also see the introduction thread.
Hi, I'm a lurker. You even managed to trick me into creating an account.
I believe that at least 50% of regular lurkers will not say "hi" in this thread.