Love the meme comment!
I don't think of resubmitting in the same way as reposting. Sharing and reposting-but-admitting-it's-a-repost are okay, in my book.
But full-on reposting is the little brother of plagiarism to me. Accidental can be forgiven, though if it's something brilliant (such as this OP, for example), I check with Google Images first, just to be sure it wasn't. Sometimes I can't believe nobody else thought up some of the ones I thought were genius (not that many agree with me, apparently).