It is an interesting concept yes. Also it has the merit of actually accurately measuring the time one spends on the site. (As browsers can throttle JavaScript o

It is an interesting concept yes. Also it has the merit of actually accurately measuring the time one spends on the site. (As browsers can throttle JavaScript on tabs which are not in front). How to communicate this to the users is a bit hard though. Should the site show ads and somewhere have a toggle to switch to mining? Would people actually go there?