Article: On 7 January 2009, The Sun ran an exclusive front page story claiming that participants in a discussion on Ummah.com, a British Muslim internet forum, had made a "hate hit list" of British Jews to be targeted by extremists over the Gaza War. It was claimed that "Those listed [on the forum] should treat it very seriously. Expect a hate campaign and intimidation by 20 or 30 thugs." The UK magazine Private Eye claimed that Glen Jenvey, a man quoted by The Sun as a terrorism expert, who had been posting to the forum under the pseudonym "Abuislam", was the only forum member promoting a hate campaign while other members promoted peaceful advocacy, such as writing 'polite letters'. The story has since been removed from The Sun's website following complaints to the UK's Press Complaints Commission.

Now answer this question: What type of forum was the subject of a January 2009 front page story in The Sun?
a British Muslim internet forum