Did they actually run the DDoS via a script or was this a case of inserting a link and many users clicked it? They are substantially different IMO
they silently ran the DDoS script on their captcha page (which is frequently shown to visitors, even when simply viewing and not archiving a new page)
https://news.ycombinator.com/item?id=46624740 has the earliest writeup that I know of. It was running it via a script and intentionally using cache busting techniques to try to increase load on the hosted wordpress infrastructure.