Hmm. Only hypothesis I have is that person is trying to build up legit-looking accounts on social news sites by submitting random stuff, so that the links they

Hmm. Only hypothesis I have is that person is trying to build up legit-looking accounts on social news sites by submitting random stuff, so that the links they want to promote don't get recognized as such when they get submitted? (in which case, the "SEO" in the username is a bit puzzling, because it's not very subtle).