LONDON (Reuters) - Britain's High Court ordered its first injunction via Twitter on Thursday, saying the social website and micro-blogging service was the best way to reach an anonymous Tweeter who had been impersonating someone. Solicitors Griffin Law sought the injunction against the micro-blog page www.twitter.com/blaneysblarney arguing it was impersonating right-wing blogger Donal Blaney, the owner of Griffin Law. The legal first could have widespread implications for the blogosphere. "I think this is a landmark decision to issue a writ via Twitter," said Dr Konstantinos Komaitis of Strathclyde University's law faculty. "You are creating a precedent that people will be...