Based on the online lookups, the #1 Word of the Year for 2004 was
Blog noun [short for Weblog] (1999) : a Web site that contains an online personal journal with reflections, comments.
Joy and Phil discussed and researched the lifestyle. They worked together for nearly five years in preparation for their dream of full time RV living. Phil retired in June 2004; they moved into the perfect motorhome; held the last garage sale; sold the vehicles, boat and house; bought the Ford Ranger; crossed off what seemed like thousands of to-dos on the lists and at last, the day of departure arrived. Welcome to our weblog and let the adventure begin!