Abstract: An interactive broadcasting system is arranged to receive and respond to user inputs in relation to broadcast material. A scheduler (1200) polls continuously for new user inputs and adjusts its scheduling appropriately, in accordance with algorithms. This might be for example to insert content from user inputs into a live or pre-recorded broadcast or to re-order elements of a broadcast, such as travel clips from a playlist. The system has many applications. Users can for example post messages or dedications, interact in discussion programmes, vote for clips from a playlist, request live feeds, enter competitions or make purchases. Optionally, the response of the scheduler (1200) can be time dependent, for instance changing algorithms or scheduled content at a particular time of day or day of the week.