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Our author touts the benefits of profile verification for providing clients with trustworthy reputations.

Twitter has deleted more than 70 million accounts engaging in suspicious and “trolling” behavior throughout May and June, and shows no sign of slowing down in July. This should make the platform more trusted by users and brands, but the effects on its stock price and opportunities for user growth are up in the air.

In a massive purging of millions of accounts on Wednesday, Instagram presented a sobering example of the problems in quantifying engagement on the Internet.