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, lurker here (male, Chicago, attorney, 30). I am a regular Overcoming Bias reader who followed Eliezer to this site. To quote Buster Bluth: "You guys are so smart!" (slides off chair).