NSPCC advert "I saw your willy" warns parents about the dangers of social media

The NSPCC is advising parents in the South West to be more aware of what sites their children visit when they're online.

Today it began its Share Aware campaign to get families talking about socialising safely on the internet. Cameron Holder, who's 16 and from Bristol, says children need to be especially careful about posting pictures.

"As soon as it's up, you might not be able to take it back down, and somebody can screengrab it, they can do anything with it. Something that's so private, can become public at the press of a button. I think you need to make sure that you think before you send."