I guess the "this has already been posted, but so what" subject line was an invitation for someone to step up and tell me it had already been posted. And if I overreacted, it was basically because in my entire on DU, I've never felt the need to go into someone's thread and post "that's already been posted," and I've seen shit that I've posted show up two and three days after I've initially posted it.
And yeah, I bitched about it. So fucking what. If it diminished my stature in your eyes, I'll somehow survive.