Block or Highlight Search Engine Results v4.6.0
This is a blocker and a highlighter for your favorite search engine. It allows you to filter (mark, highlight, hide or block) search engine results in Duckduckgo, Google, Yahoo, Bing, Startpage, Ecosia, Yandex, OneSearch and Baidu search engines. For example, you can highlight all results from Wikipedia and hide those form Facebook.
If you use another search engine, let me know :)