Based on your 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, and often hyperlinks provided by the writer.
The other nine:
2. incumbent
3. electoral
4. insurgent
5. hurricane
6. cicada
7. peloton
8. partisan
9. sovereignty
10. defenestration