To end the debate, Cory Doctorow has been described, by Charlie Stross at least, as a public intellectual.
When I lived in Budapest, I had a card that described me as an “Élet művész”, or “life artist.” I thought the phrase was funny; the idiomatic meaning was more akin to “con artist” – something I hope I was not, but at 22-25 I may have only been fooling myself.