Ask HN: What (tech)conferences are you going to in 2011 and why?

I've only ever been to one conference in my lifetime. I'd like to go to more because I had a fairly positive experience. My primary motivation is that I want to meet new, interesting, people and learn new things in a social environment. So, what conferences are HNers going to this year and why are you going to them? That information would be great fodder for me (and anyone else) who'd like to create a conference schedule for 2011.