I write very, very little, but I obsess over writing tools and try every piece of software imaginable. Same with the platform of this blog. Hand coded HTML, MoveableType, Tumblr, Jeykll, Octopress, and now, WordPress have powered this blog over the years.
But what does Game of Thrones author George R. R. Martin use to blog and write? Well, he uses good old fashioned LiveJournal to blog. And to write? Wordstar 4.0! A program from 1987.