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.
I've been following Eliezer since shortly after he started posting to SL4. Back then I went by the name "observer".
Oh, and I donate lots of money to SIAI. The past couple years it was between $6000 and $7000 (about 20% of my income), but I plan to donate more from now on. This year I pledged $20,000 (over 60% of this year's income), and I might not even need to take money out of savings in order to pay this. Seriously. I'm a hardcore Singularitarian. A Yudkowsky Singularitarian, not a Kurzweil Singularitarian.
And yes, I like the word "Singularitarian" :)
I have a user page on the Less Wrong wiki
I also have a user page on the Transhumanist Wiki