Even if it's an honest mistake, blocking useful sexual health and LGBT resources constitutes an inevitable encroach upon online civil liberties.
Yesterday, two people - a man and a woman - were convicted of sending threatening tweets to Caroline Criado-Perez. What do their stories tell us about the causes of internet abuse, and how to tackle it?
In Cape Town, ten schools benefited from fast, reliable broadband delivered not by wires, but by broadcast towers.
Cyber-crime knows know borders, so nor should our defences.
For those who want their own digital space there are other networks than the internet.
"Come and find me," said the man who didn't believe it was easy to find people on the net, giving his real name. Twenty minutes later, I knew his address, university and current height and weight.
What we know about the men (and sometimes women) who spend their days trying to provoke a reaction on the internet.
It would be nice to think that the rot of rank misogyny was confined to fringe sites populated by lunatics. But it is found all over the web - and it's silencing its victims. Fighting it is not the same as censorship.
DSMO, the website that abused Mary Beard, did far more than host threads dedicated to obscenity and offence. Its users took delight in bullying and harrassing their victims.