UPDATE "Cook County Sues Facebook, Cambridge Analytica for Consumer Fraud" [ WTTW ]. "The complaint claims Facebook may have begun as a social media site, but over the years it has essentially transitioned into a data aggregation machine designed to 'manipulate users into making the decisions Facebook and its business partners want them to make.' "This kind of mass data collection was not only allowed but encouraged by Facebook, which sought to keep developers building on its platform and provide companies with all the tools they need to influence and manipulate behavior,' the complaint states. 'That's because Facebook is not a social media company: it is the largest data mining operation in existence.'" Here's the complaint (PDF) ; it certainly does consolidate a lot of useful information in one place, especially on manipulating behavior, so if you've got the time, grab a cup of coffee because it's well worth the read. Presumably the complaint wouldn't have gone forward with Rahm's OK.