Hi. I've been reading lesswrong since the start. I had overcomingbias.com on my RSS feeds before that became Robin Hanson's personal blog, and followed the threads onto this site.
I don't generally feel the need to comment on the posts here. My mind does come up with questions and opinions from what I read, but I've found that if I wait long enough, someone else will usually chime in with something close enough to my own thoughts that I feel my point has been made, even if not by me.
I have thought of a few things that might have made an interesting top-level post here (and with these, I haven't always found someone else pipe up with the same idea), but I never got around to writing them, and with no comment-earned karma score, I don't think I could initiate a top-level post anyway. I guess I could write them as comments in the open threads, were I more motivated to do so, but as I have other priorities, I'd prefer to just read.
I don't find any of the above particularly problematic--I quite enjoy reading this site, even without writing anything myself. But, since my "hello" cannot be redundant here, no matter how similar it might be similar to other ones: hello everyone! Here I am!
And now back to lurking.