Mm, I don't think it matters. Posting someone else's work under your own name is plagiarism no matter the content of the work. The reason I flagged this up with you is because someone was reblogging it on tumblr from the thief's dA page - I took one look at that image and I knew it was yours. (I ought to; it's my desktop background.) I don't like seeing someone else take credit for an artist's efforts at the best of times; when it's an artist I particularly admire, even more so.