Male, 24, Currently in Edinburgh, lived in Leeds most of my life though. Jim because my first name is James (and jim just seemed "cooler" -- when I was 13, at least), and 360 because 359 other people had the same idea when I'd first tried to use "jim".
Actually that's not quite true. I actually went online as "jim420" for a while, indeed because just plain "jim" was taken, and so some website suggested "jim420" instead. So I used that for a while. Until various American people started asking if I was doing drugs. It turns out that "420" is a sign for "let's do marijuana" in the US, apparently. So I changed to 360. Which is cooler anyway.