For those who have been following the scenario of the Fine
  Brothers, who had trademarked REACT and the format of reaction
  videos, they made the right and smart move and they're taking it
  ALL back. Their letter says it all: The potential for misuse is
  built-in t the way they handled it and there's no proof their
  intentions are pure and won't be misused.
  https://medium.com/@FineBrothersEnt/a-message-from-the-fine-brothers-a18ef9b31777