Belgian Police Warn Using Facebook's Reactions May Compromise Privacy
Advertisers and marketers could use the reaction data to target ads, but Facebook isn't giving them enough information to do that yet.By Leah Becerra | May 14, 2016
Belgian police are warning people that reacting to a Facebook post could be compromising individuals' privacy — but that's not really a huge revelation.
When the social media site rolled out the option to do more than just like posts in February, it was because users and Facebook agreed: Liking just couldn't accurately express empathy for certain topics.
Adding reactions also gave Facebook a little more data about what makes users happy, sad, mad and all that other stuff.