Hi.
Why would Less Wrong have an abnormally high percentage of lurkers? Also, being a lurker is not in black and white. For example. I mostly just lurk, but I post comments occasionally.
I think Less Wrong has an abnormally high percentage of lurkers because if participating at any web site is intimidating, participating at Less Wrong is especially intimidating because of the high level of discourse and English linguistic proficiency.
For the strictest definition of lurker, if you have registered for an account you are not or are not longer a lurker, but the definition is really not important.
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.