According to the Gloucester Citizen, the Belgium police have recommended that Facebook users not partake in using the react buttons that Facebook released back in February. This is due to a number of privacy mishaps, ones that the Belgium police force say citizens can avoid if they just don't press that frowning face or heart and stick to liking things instead.
"[Facebook] now has a medium which allows it to measure our reactions to the publications of our friends or pages that we follow," read a statement on the police force's website. "And now, in addition to allowing you to express your feelings, those little icons will also help verify the effectiveness of advertisements that are present on your profile."
Tech Times noted that each reaction generates into an algorithm that Facebook uses to assess your mood, noting which advertisements you would be more receptive too. However, this algorithm is not perfect, and while the newest feature did add something that users had been requesting for awhile sometimes negative reactions will trigger advertisements to things users do not want to see, simply because the click gauged a reaction.
The Belgium Police noted that if you don't like the influx of advertisements or just want to avoid the whole situation of getting an advertisement you don't want to see then it's best to avoid it altogether.
"In conclusion, it will be one more reason not to click too fast if you want to preserve your privacy."