Comment by 1oooqooq

anubis and others allow some user agents to pass without proof of work. bad bots (and user) just use an extension that detect anubis and change the user agent instead.

it's well intentioned but just waste electricity from good people in the end.

anubis does nothing to impact bad crawlers, well only the laziest ones. but for those generating fake infinite content on the fly is much more efficient.