Hi! I discovered this site via OB a few months ago and have been lurking ever since. I've commented only twice before but have been reluctant to comment more as I haven't yet read anywhere near as much of LW as I would like. I'm very interested in many of the very common topics of discussion here, such as rationality, AI, etc, and hope to be able to make a contribution to our understanding of one or more such topics in the future.
Thanks for the excuse to comment, and to the LW community at large for creating such a fascinating site.
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.