re: Oh, crap.
You don't get it. I read your post, opened the link (in a new window) to the article that was in your post, left that article up on the screen overnight, finished reading it the next day, totally forgot where I'd seen the original link to it, then posted the exact article YOU had linked to the board, not two threads above your original post.
I just wish it was just a case of missing your post entirely and posting an independently-found duplicate article. That would be less dopey, and something I've done a lot more than twice.