Marco Arment sold Instapaper more than two years ago and as far as I know, is not directly involved with it in any way today. Still, as evident by your comment,

Marco Arment sold Instapaper more than two years ago and as far as I know, is not directly involved with it in any way today. Still, as evident by your comment, his name is of course very much associated with it. http://www.marco.org/2013/04/25/instapaper-next-generation http://www.marco.org/2013/04/25/instapaper-next-generation