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.
Lurker for about a year. Made my only previous comment to this one a few months ago.
I almost never feel I have anything to contribute here. Even when I do, someone else has already expressed my thoughts in a comment more clear and thorough than anything I would have written. But this is a good thing!