I'm pretty sure I could easily bot this though - I'm not an expect web scraper/automator by any means, my experience with PhantomJS is probably quite out of date, but what's stopping me from running x,000's of little scripts on a x,000 different VPS's (or a botnet, if I'm a bit evil), setup a unique looking User Agent and client environment in case of any finger-printing, and adding my competitor to a blacklist x,000 times? I'm pretty sure I could make it all look human enough. The manual check doesn't stop me from flooding the moderation queue at the very least, and perhaps the mod gets genuinely fooled, or convinced that my competitor must be up to no good.