I was knocked sideways to see Sockpuppet name-checked by John Humphrys in both the Radio Times and the Guardian.
The Radio Times interview the great man in their 2–8 April 2016 issue. Asked to recommend a book, he went for “An utterly riveting book called Sockpuppet by Matthew Blakstad”. Here's the proof!
He also mentioned the book in this Guardian piece by Maev Kennedy on 29 March. I especially like the description of Sockpuppet as an 'internet paranoia novel'. It makes it sound like a contemporary version of The Parallax View or The Thomas Crown Affair...