Merriam-Webster has announced w00t (spelled w-zero-zero-t) as the word of the year for 2007. Selection is based on visitor votes to the Merriam-Webster web site. With a mix of letters and numbers - is w00t really a word? Here's Merriam-Websters definition:
expressing joy (it could be after a triumph, or for no reason at all); similar in use to the word "yay"
According to Merriam-Webster, the word is part of what gamers refer to as l33t ("leet," or "elite") speak. Check out this link on the Merriam-Webster site to read the full press release and see the top ten vote getters. I can't wait to show this one to my retired english teacher mom!