Another piece of advice I forgot to mention: "Burping" your egg. Make sure you get yourself in a habit of doing this when you open the lid. I've found that for me it's really only an issue when mine is heated at or above 400°, but I still try to remember to do it every time I open the lid. I do occasionally forget and end up singing a littl arm hair
Simply use a long gauntlet-style heat resistant glove, such a a welder's glove, on the hand you are opening the lid with and instead of just raising the lid, open it just a bit for a few seconds. If you look through that opening, you'll see the flames flash but they will be contained within the egg. Once you get that initial flash, it is safe to open the lid the rest of the way. I hope I've done a good job of explaining this. As much reading and research as I did on the eggs before I purchased mine, I found nothing (not even the description on the Naked Whiz's site) that truly prepared me for what a flashback would be like, so the very first one really took me by surprise. They don't happen very often anymore, but when they do they're like second nature
BTW, doing this will also help preserve that gasket some. My egg is now 2 years old, and while my gasket is far from pristine, it's not shot either.