Facebook CEO and co-founder Mark Zuckerberg is firing back at Apple CEO Tim Cook. Zuckerberg is defending his company's business model in an interview published today by Vox. The billionaire social network entrepreneur said he's building a service that helps connect everyone in the world, including a lot of people who can't afford to pay. Zuckerberg said selling advertising is the only way to support that. Apple boss Cook recently questioned monetizing users' information on free platforms like Facebook by selling ads that allow advertisers to target certain groups. Cook also called for more regulation of social media.
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