We are increasingly hearing from worried teenagers who know photographs of them are out there somewhere on the internet, being passed from person to person. Often they end up in the hands of adult sex offenders; paedophiles.

Paedophiles may try to convince themselves these are 'consenting' relationships but they come at great cost to the victim, or survivor, and to the UK taxpayer through associated health costs. At the NSPCC we hear about and work with this fallout every day.

To mark the anniversary of Peter Connelly's death, the NSPCC is highlighting the on-going plight of our most vulnerable children. We have looked at the circumstances of around 35 baby deaths and found the same mistakes still being made over and over again. The same warning signs being missed, the same lessons for the future repeated over and over but not enough changing.

There is much to celebrate in child protection from 2011, but we need a radical rethink if we are to make a real difference in 2012. This has been a year of significant change in child protection, much of it for the better. And it was also the year that saw ChildLine celebrate 25 years of helping vulnerable children. Over a quarter of a century it has helped 2.6 million young people since it was launched by Esther Rantzen... But sadly, serious abuse and neglect still occur. On average around 50 children are killed each year in England and Wales, most by those that were supposed to love and protect them.