Blog in Oxford English Dictionary

The shorter version - blog, was coined by Peter Merholz who in April or May of 1999 broke the word weblog into the phrase "we blog" in the sidebar of his weblog. Usage spread during 1999 and the word was popularized by Pyra's creation of their weblog service Blogger. As of March 2003, the Oxford English Dictionary included the terms weblog, weblogging and weblogger in their dictionary.
One of the pioneers of the tools that make blogging more than merely websites that scroll is Dave Winer. One of his most important contributions was the creation of servers which weblogs would ping to show that they had updated. Blog reading utilities, such as Blogrolling use the aggregated update data to show a user when their favorite blogs have new posts.