#lang racket (provide blacklist) (define blacklist '( ; Social Media "facebook.com" "instagram.com" "reddit.com" "tiktok.com" "twitter.com" ; Video Hosting "youtube.com" "vimeo.com" ; Stack Exchange "askubuntu.com" "blogoverflow.com" "mathoverflow.net" "serverfault.com" "stackapps.com" "stackexchange.com" "stackoverflow.com" "superuser.com" "tex-talk.net" ))