That's a vague and borderline off-topic suggestion, imo. When the problem is too many malicious visitors hammering your server, the amount of time it takes the visitors' browser to run the JavaScript is not the issue; on the contrary, when dealing with this issue, you might as well do more rendering client-side to offload as much work from the server side as possible (hence the Anubis-esque defense of adding random JavaScript work that isn't even necessary to render the real page).