A spokesman for the Oxford University Press said that the word was now being put into other dictionaries for children and learners, reflecting its mainstream use.

“I think it was the word of last year rather than this year,” he said.

“Now we’re getting words that derive from it such as ‘blogosphere’ and so on,” he said.

“But,” he added, “it’s a pretty recent thing and in the way that this happens these days it’s got established very quickly.” —Why 2004 was the year of the blog (BBC)

Thanks for the suggestion, Rosemary.

Worth noting: Blood’s Law of Weblog History: The year you discovered weblogs and/or started your own is ‘The Year Blogs Exploded’.