Its the only platform I can think of which, if I was asked to suggest a tool for something-in this case blogging-I wouldn’t start by saying: “well, that depends…”. WordPress is as close to a binary recommendation as I get, recent security concerns notwithstanding. Security is made better by transparency, in my opinion. Webware 100 winner- but of course.
disclosure: RedMonk.com runs on WordPress
recommendation: if you’re looking for mad WordPress skillz check out CrowdFavorite.