Hello. I'm Snowyowl, or Christopher if you're interested in my real name. (Some people are.) I first discovered this site on Friday 14th August, when a friend of mine (who calls herself Kron) pointed me in the direction of the story "Harry Potter and the Methods Of Rationality".
I don't consider myself a rationalist, because that seems like a sure-fire way of feeling superior to 90% of the world. Also, I have realised in the past week that a lot of my beliefs and opinions are contradictory - in LessWrong lingo, my Bayesian network isn't internally consistent. Of course, I had noticed that before now, but it didn't seem an important problem before I read a few relevant blog posts. So no, I'm not a rationalist, and I hadn't even heard the word until two weeks ago.
I'm a second-year mathematics undergrad at the time of writing; I had actually heard of Bayes' Theorem years ago. I have also taken courses branching out into computing and physics. The techniques in your blog appeal to my way of thinking, since I enjoy mathematics and logic, and applying scientific methods to everyday life is a relatively new concept to me.
So hello, LessWrong! I look forward to many calm and reasonable debates!