SPRINGFIELD, Mass. — Expect cheers among hardcore online game enthusiasts when they learn Merriam-Webster's Word of the Year. Or, more accurately, expect them to "w00t." "W00t," a hybrid of letters and numbers used by gamers as an exclamation of happiness or triumph, topped all other terms in the Springfield-based dictionary publisher's online poll for the word that best sums up 2007. Merriam-Webster's president, John Morse, said "w00t" was an ideal choice because it blends whimsy and new technology.