Most bloggers I know don’t much like the word "blog", and they have even less affection for "blogosphere." Blech.
Wikipedia says credit — or blame — for coining "blogosphere" goes to Brad Graham, a theater publicist and blogger in St. Louis who died this week at the age of 41. Look him up on Google and you’ll see: "Blogosphere" is his legacy.
http://www.npr.org/templates/story/story.php?storyId=122277812