I'm trying every year to speak at least at one international conference. Attending to a conference is a good way to keep me updated with what's happening in the real outside world, and I also like to talk about my work while I'm there ;)
I don't have much free time, I dislike airports, and I'm married : three good reasons why I'm also limiting a bit my involvement within the "conference loop" compared to some of my good Flash friends which are doing something like five (or more) conferences a year.
Since I like to meet new people and learn new things, I think it's best to go as much as possible to different conferences. This year I will be very happy to speak about Haxe at the Flash Gaming Summit conference which takes place in San Francisco next month !
This is a bit a side-event of the bigger Game Developer Conference 2010 so I'm sure I'll have a lot of fun there, and meet people that want to hear more about how to develop Flash games with Haxe.
EDIT : I decided to the stay the whole week in SF and attend the GDC at the same time, so if I know you and if you are around, drop me an email so we can meet.
See you (maybe) there !