Howdy, I'm a math grad student.
I discovered Less Wrong late last night when a friend linked to a post about enjoying "mere" reality, which is a position I've held for quite some time. That post led me to a couple posts about polyamory and Bayesianism, which were both quite interesting, and I say this as someone familiar with each topic.
Although I've read bits & pieces of Harry Potter & the Methods of Rationality, it wasn't until I browsed through this thread that I realized it was assembled here.
I will freely admit that I tend to be a bit skeptical of enthusiastic science fans (not a stick in the mud, but annoyed with giddy atheism run amok, say, or with the glorification of pop science; maybe it's best summarized by this comic: http://www.smbc-comics.com/index.php?db=comics&id=1777#comic ), but I expect that any such cynical voices are either welcome here or are dismissed with such irony as to be amusing.
The fact that I went to the trouble to join & post should be evidence enough to say I like much of what I've seen. :)
What is your area of research/interest in Mathematics?
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A list of some posts that are pretty awesome
I recommend the major sequences to everybody, but I realize how daunting they look at first. So for purposes of immediate gratification, the following posts are particularly interesting/illuminating/provocative and don't require any previous reading:
More suggestions are welcome! Or just check out the top-rated posts from the history of Less Wrong. Most posts at +50 or more are well worth your time.
Welcome to Less Wrong, and we look forward to hearing from you throughout the site.