Works great, i.e. blocks most of the poupups, but that also means a lot of sites are broken (since accepting cookies sometimes 'unlocks' the whole site, so the addon has to be disabled). It can be a bit annoying, maybe more than the popups themselves.

Because of thet, I wouldn't reccomend it for people who can't easliy spot that a site is broken, due to blocking the cookie popup (or don't won't to deal with this).