Not sure if I count as a lurker, since I've posted a few things here and there, but I've never introduced myself properly, so "Hi!"
I discovered LW via OB, which I discovered via researching Hanson's ideas on prediction markets... my primary interest is in Hanson-esque ideas on designing social institutions to be Less Wrong.
I've been gradually bringing myself up to speed on Eliezer's writings, and I am still somewhat skeptical on singularity-related issues, but less so than when I first started reading.
I have no impressive sounding credentials to my name... well, I have a B.S. in Computer Science, but I don't feel like that really counts as a qualification for the kinds of issues discussed here.
That's about all I can think of at the moment, introduction wise.... now where's my free karma point?! ;)
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.