by Bill MCCARTHY Agence France Presse Washington, United States (AFP) — The rollout of Twitter’s subscription service has prompted a string of accounts impersonating public figures, sparking concerns about the potential for scams and disinformation. Multiple accounts posing as politicians, celebrities and corporate brands have been suspended after being identified as inauthentic. The impostors had paid the $7.99 required to display a verified blue tick –- an identifier previously reserved for notable people or institutions […]