It would be on a separate page (opt-in, I don't want to murder batteries) and users could get XP (to remove captchas earlier, etc) or some of those spots credits to draw dicks on the canvas.
What do you guys think about that? We're currently testing that here.
EDIT: Use this one now. This one keeps track of how much everybody has contributed
I was going to report that the button is not working when I realized that I added coin-hive.com to uBlock Origin some time ago.