December 1997: Jorn Barger starts a daily log of interesting Web links published in reverse chronological order, calling it Robot Wisdom WebLog. The term "Weblog" is soon generalized by other online publishers to include any page with frequent short posts in reverse chronological order.
1998: Open Diary becomes one of the first online tools to assist users in the publishing of online journals. It would later be followed by other journaling tools, including LiveJournal (1999), DiaryLand (1999), Pitas (1999), Blogger (1999), Xanga (2000), Movable Type (2001) and Wordpress (2003).
Spring 1999: Online journal author Peter Merholz takes Jorn Barger's word "weblog" and splits it into the phrase "We blog." Blog soon becomes shorthand for weblog.
In 2001, Andrew Sullivan was one of the first big-name bloggers to emerge.
I heard it on NPR :)