Evidence That UK Needs Mandatory Porn Filters? Informal Survey Done At One School

In the UK there is currently a campaign and associated petition from the organization "Safety Net: Protecting Innocence Online", which calls for mandatory Net filtering of pornography -- people would need to opt out of the system if they wanted to view this material. The justification -- of course -- is the usual "won't someone think of the children?" Here's the pitch: 

On Techdirt.