Well, I guess if one of the people I recommended this site to is going to post here, I ought to do so as well.
24, male, engineering major working as a software developer. I started reading back in the Overcoming Bias days in order to understand what the hell two of my roommates were talking about all the time; there's a lot of material here that needs to be read and mentally cached before you can start cross-referencing it in your brain, at least in my experience. It's been a worthwhile effort, though.
I must have commented on at least one or two posts back when the blog was part of OB, because my normal username NthDegree256 has been eaten.
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.