Before the latest major upgrade, I think I had the index function set up to keep track of three-letter words, but now we're back to adding exceptions to a list. For now, I'll add "Wii" (and "PS3" and "360") to the list of shorter words to keep in the index and if cka thinks it won't cause a noticeable performance hit to track three-letter words by default, we can re-enable it.
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