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Shit like this is why I am always on my guard against offers of "free" anything from corpos. Always.
(i.imgur.com)
Sometimes they even get rubes to pay for the privilege of being exploited and sold off in marketable pieces, such as 23andMe. 
How does this effect it's workers?
Say someone who works at McDonald's also has the app, and then the company does something illegal. Does that mean the worker can't sue them?