For some time now, a self-proclaimed "freelance anti-terror investigator" named Glen Jenvey has been feeding stories to the media about on-line Islamic extremism, particularly in British tabloids (but also in the famous "Obsession" DVD). However, a blogger, Tim Ireland, has uncovered overwhelming evidence that Jenvey made bogus postings to Muslim discussion sites himself to create panics. Jenvey also boasts of having influenced the James Ujaama trial by releasing videos at strategic moments.
One high-profile British MP who has used his talking-points is currently in the process of repudiating him, and a number of journalists and others are possibly compromised by having relied (lazily) on his material. The link to my blog provides what I hope is a clear short introduction to the story, which highlights a lot about what's wrong with the "old" media. Regards.