Brilliant. I completely agree - there are some ads I like (I'm so glad I saw ads for Harvest Accounting and 10 Cloverfield Lane), but I never want to see an ad for Zoosk ever again. Telling the site is a great idea, but they probably don't have enough control in their ad tools to block them.

Google at least gives some user control via http://www.google.com/settings/ads/ and Google Contributor in the US, but nowhere near enough to block specific advertisers.