If a link to “activate dislike button” shows up on your Facebook page – do not, Do Not, DO NOT click that link! The scam link, spreading like wildfire, appears as a post on your wall that says “Facebook just added the dislike button! Click on ‘Activate Dislike Button’ below to enable it on your account!” Of course, the FB dislike button is another Facebook scam, carrying with it a Facebook virus and a bonus of malware that it downloads to your computer in the background.