Instagram grew so rapidly its founders barely bothered tracking active users – Breaking News & Latest Updates 2026
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FTC v. Meta: the antitrust battle over Instagram and WhatsApp

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It was hard to keep up with Instagram’s early growth.

At launch, Systrom says the app’s growth was “exponential, unstoppable,” with 25,000 users registering in the first day. It was growing so quickly in the early days that, in his eyes, it didn’t even matter exactly how many active users were on the platform; he just had to keep up with the demand, he testifies.

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