On 12 October 2007, the programme started an additional blog for a spin-off programme called iPM, which was broadcast on Saturdays at 5:30pm (immediately after the Saturday edition of PM) until 22 December, and also made available as a podcast. iPM was a unique programme in that through the blog, listeners could discuss ideas with the production team and comment on the stories being lined up for the following show - so what ended up on air was shaped by the listeners.
Read more about this topic: PM (Radio 4)