I read a whole lot. I also write a whole lot and am just now getting brave enough to post anything in the HP fandom. I'm going to say now that I'm U.S. born and raised and, while I've traveled internationally quite a bit, my English is very much the U.S. variety. I'm attempting to stay away from jargon, but I know some of my all-over-the-place colloquialisms will sneak in.
Anyway, I have the same name over on AO3, but everything there is pretty much on fanfiction.net.