I think the my "style" is all over the place. There are similar things across my whole gallery but really I feel like I'm trying something new every time. One thing I can say that lends to my style though is that I never sketch or even plan. Almost all of my art comes from "exploring" with the canvas. Sometimes what I start drawing will be a completely different idea than what I come up with, but I almost always get something I'm satisfied with.
I use Graphics Gale. I started out in MS Paint, but when I upgraded my computer to windows 7(?) and they changed the way paint worked, I just couldn't do it anymore I almost quit entirely. Then someone showed me Graphics gale and it seemed so feature rich to me. Now I've been using it so long that I can't use anything else, and I've tried them all but I need right click as my color dropper haha.
I have a sort of interesting story I think. There were a lot of factors that drew me to pixel art, and one which I totally forgot until I read Skeddles post, holy crap The Mystical Forest Zone was so cool to me as a kid. Anyway, I have a bunch of early memories regarding pixel art. But the one I would say that got me actually into pixel art would be a little online social game called Graal Online. Specifically the in game server called Unholy Nation. You could play the game with a free account, but you would lose every thing if you logged off, and you would start out as the "noob" character. It was a cute little dude with a mohawk. Now I think it's cute but back then I never wanted to be seen as a noob! So you could type in-game "changehead_???" and change your head, or your body into another sprite! It was really fun, and there were so many options. My brother then figured out you could make your own, and he showed me how he edited someone else's sprites in MS paint. I was so fascinated by the idea that something he created was now in the game. So I started doing it. It was the first time I was ever really creative. I created probably over a hundred different heads and bodies, weapons, accessories etc. I started to become a little famous in-game because people were wearing my stuff, and it was a pretty consistently good quality. I became friends with the guy who uploaded the skins and he would help me animate and things. I wish I had kept the old sprites I made because I had some awesome stuff. I made a body once that was just the "noob head" that rolled around on the ground. So people could set their head to be invisible and just be a rolling head haha. Anyway that got too long. Great topic.