https://news.ycombinator.com/item?id=21622322 (Nov 2019) "Tell HN: Google should drop Quora from search results" 1000+ upvotes
https://news.ycombinator.com/item?id=16613996 (Mar 2018) “Pinterest needs to be removed from Google IMO” 1100+ upvotes
https://news.ycombinator.com/item?id=16388833 (Feb 2018)
And many more: https://www.google.com/search?q=site%3Anews.ycombinator.com+...