It's not "if", it's "when". Since this is inherently an automated comment-propagation system, it seems significantly easier to spam billions of sites with a bo

It's not "if", it's "when". Since this is inherently an automated comment-propagation system, it seems significantly easier to spam billions of sites with a bot. Captchas suck / only work to some degree, but they work to some degree - what would be implemented in this system? I can see a proof-of-work system working reasonably well (gets rid of mass-spams, though big sites would still get automated ones), but it seems like there should be something baked into it if this is at all intended to grow beyond 'indie'.