I'm pretty sure this would just subconsciously train me to procrastinate elsewhere. At least when procrastinating on HN there's a chance I'll learn something about programming or business.

I find this idea and noprocrast a tad bizarre. HN has a simple goal (sharing info of interest to hackers), which thanks to focused design it does pretty well. Fixing my brain is feature creep, and should be well outside it's scope.