
In 2007, a computer programmer called Kathy Sierra “left the internet”. She had suffered a campaign of harassment that included threats accompanied by photos of corpses, and the publication of details such as her social security number and address. She deleted her blog, cancelled her speaking engagements and withdrew from every open forum.
By the time I started writing about trolling, Sierra was long gone. She was an internet ghost, a story to scare children with (particularly if they were female). She had done exactly what many well-intentioned readers have urged those who suffer internet abuse to do: she moved her life offline.