"Since you don't know the people (usually) you have no idea who you could be talking to."
- it's easy for a child aged 11 to register
"Very easy process. A child over the age of 6 or 7 could probably do this easily."
We asked parents of 8-12 year olds how easy it would be for an 11 year old child to pretend to be a different age to sign up, and whether any checks were in place.