“The Court of Appeal has ruled that in principle, an internet service provider that allowed defamatory material to remain on a blog hosted on its platform after it had been notified of a complaint might be a ‘publisher’ of this material, although in this case the probable damage to the complainant’s reputation over a short period was so trivial that libel proceedings could not be justified.”
UK Human Rights Blog, 17th February 2013
Source: www.ukhumanrightsblog.com