When you first started using Facebook, suddenly friends and family who you hadn't seen in years were closer! It was even free!
This was before you realized that you were the product. Remember the Cambridge Analytica scandal?
To refresh your memory: In the mid 2010s, a British political consulting firm called Cambridge Analytica obtained data from tens of millions of Facebook users and used it for targeted political advertising, including work related to the 2016 Trump campaign. The sneaky scheme they used to get the data came from an academic-style personality quiz app created by researcher Aleksandr Kogan. Facebook’s APIs let the app harvest not only users' data but also much of their friends’ data, even though those friends had never consented.