According to Wikipedia:
The term “weblog” was coined by Jorn Barger on 17 December 1997. The short form, “blog,” was coined by Peter Merholz, who jokingly broke the word weblog into the phrase we blog in the sidebar of his blog Peterme.com in April or May of 1999. This was quickly adopted as both a noun and verb (“to blog,” meaning “to edit one’s weblog or to post to one’s weblog”).
Thanks to everyone who has paved the way for ContentRobot to not only blog ourselves but to help others in their blogging quests!