Three. My first (very much cringy) account was XxAmaya-FoxxX and I was very much tired of the username after I stopped being quite so obsessed with Japanese. So that account lasted from 2011 to 2013. Then, Chemical-Harmonies - I initially created the account I'm using now as a backup to C-H... and then, during a fight with a friend who knew my password, I changed it. And promptly forgot the new password. So I was locked out of C-H, and had to use this one. And I enjoyed it more over here - my older accounts all have some bad memories associated with them, this one...not so much.
Either that, or I'm more mature somehow now I was a pretty nasty person a few years ago.
I made my first account when I was 11, and I was really mean on that account, also only posted really shitty MLP art I realised I was being stupid on that account so I apologised to the people I was mean to and deactivated it, then I didn't touch dA for like a year, then I made this account for a fresh start ^^ I can't believe I was so rude to people when I was young, that's not like me
I've jumped accounts three times [four, if you count my current account]. My very first account was WarriorKatz, which I deactivated for stupid reasons. I went and created xXBloodyWarriorXx later, but I got tired of the name, and I wasn't able to buy myself a membership. So, I moved to xINDUSTR1AL-SURG3RYx for a while. I moved from that account because I wanted a fresh start, I guess. A lot of the stuff associated with my past accounts [like idiotic comments I'd made] were embarassing to me. So, I moved to this one. :>