Personal Blocklist by Google https://chrome.google.com/webstore/detail/personal-blocklist-by-goo/nolijncfnkgaikbjbdaogikpmpbdcdef https://chrome.google.com/webs

Personal Blocklist by Google https://chrome.google.com/webstore/detail/personal-blocklist-by-goo/nolijncfnkgaikbjbdaogikpmpbdcdef https://chrome.google.com/webstore/detail/personal-blocklist... Note that it doesn't block some spam domains that sneakily use certain special characters i their domain names. Unfortunately Google hasn't fixed this issue for forever.