Debate surrounding an appropriate age-rating system for online music videos was reignited again last week with the British Board of Film Classification (BBFC) saying it wants one introduced as soon as possible.

Following the wave of hype over Miley Cyrus' MTV VMA performance and video for Wrecking Ball (in which the young singer appears naked), a report from parenting website Netmums said the majority of parents are in despair at the level of sexual and violent content in modern music ...