I saw the following post on digg today, which claimed that there was an error in the Japanese puzzle piece of the Wikipedia logo:

Examine the Japanese symbol above the “W” in the logo of Wikipedia. This is not the actual symbol used in Japanese to approximate the “Wi” sound in Wikipedia’s name. While the logo uses use ku, or plausibly wa, followed by the small i symbol, in actuality, the “wi” sound is approximated by putting a u symbol next to a small i symbol.

It does look like a “wa” with a small “i” next to it, which I doubt would be pronounced as a “Wi” in “Wiki”. In fact, the Japanese Wikipedia site uses ウィキペディア as its official spelling, not ワィキペディア. Did wikipedia’s artist screw up on the Japanese portion of the logo?