I don't get how Pinterest hasn't been removed from existence by Google. There is literally no one who is ever searching for things that wants a Pinterest link, but the incredible persistence of Google in showing me Pinterest is amazing.
Though this kind of goes to the related question: why Google don't allow you to setup your profile to nuke domains from consideration when you search, I do not know - it would completely divorce them from any responsibility for search result manipulation and make everyone happier.
There's a great chrome extension called "unpinterested" that automatically adds -site:pinterest.* to all google queries. It's improved my use of google by an east 20%.
It's so bad you'd almost think google has a stake in pinterest at this point.
IIRC, it was canned because it was linked to search performance and was abused on an industrial scale for negative seo.
Such a blacklist could be limited to one's personal account though but, I guess, since there is no monetisation benefit for google they don't care to offer it?
Though this kind of goes to the related question: why Google don't allow you to setup your profile to nuke domains from consideration when you search, I do not know - it would completely divorce them from any responsibility for search result manipulation and make everyone happier.