[vkou]

I'm not trying to block domains from my search results because I'm afraid of spam. Google does a pretty good job of not putting spam in my search results.

I'm trying to block particular domains because I know the websites hosted on them are utter garbage, and better alternatives containing the same information exist.

[frosted-flakes]

Like Pinterest. I don't ever want to see it in my search results.

[Eisenstein]

Why does that site exist? It won't even let me see what is on there without a login. How can it possibly make money?