w00t ain't a word, irregardless of Meriam Webster

The internet word w00t, that's "w" followed by two zeros and a "t" has been named "Word ऑफ़ the Year" by Meriam-Webster. Check this link: http://arstechnica.com/news.ars/post/20071211-the-wisdom-of-crowds-w00t-voted-word-of-the-year.html However, this "word" isn't really. English words can only be created using the 26 letters of the alphabet. A zero isn't a letter. If I can't spell it using Scrabble tiles or Boggle cubes, it ain't a word.