Pinterest was certainly the first site I blocked. I've never understood the hate for w3schools. No, it's not MDN, but it's not offensively bad either, and it's been a helpful reference from time to time. If w3schools comes up first in a search, I trust that it probably has the answer to whatever very simple question I must have asked, unlike something like Pinterest, which will just be spam no matter what.
Same. It's been my go to reference for SQL these days. Unless there's some alternative that I've missed out on