By ALEX VEIGA
AP Business Writer
As Twitter’s newest board member and largest shareholder, Elon Musk is already floating suggestions for changes he’d like to see on the social media platform. In a series of tweets late Saturday, the Tesla and SpaceX CEO said that the social media company should include an “authentication checkmark” as a feature of its Twitter Blue premium subscription service. Musk says the move would “massively expand” the pool of verified user accounts and discourage the proliferation of spam “bot” accounts, making them too expensive to maintain. Musk also suggested Twitter should maybe accept subscription payments in the cryptocurrency Dogecoin.