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Pinterest's IPO filing shows how dependent websites and apps have become on Google and Facebook

Salvador Rodriguez

Pinterest said the site's traffic was hurt in the first quarter of 2018, when Google removed some keyword landing pages from search results. Similarly, Pinterest claims its user growth was negatively impacted by a change Facebook made to its login authentication system in the second quarter of 2018. Pinterest on Friday released its IPO prospectus , and the document shows just how much leverage Facebook FB and Google hold over internet companies.