Like the times, Twitter is a-changin'. 

Elon Musk stirred controversy with his decision to charge $8 per month for the little blue checkmarks next to Twitter users' handles that in the past were only given to verified accounts. That change pales in comparison, though, to his ambitious plans for Twitter.

The multibillionaire wants to build an "everything app." But there's one competitor that may have already beat him to the punch.

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Source Fool.com