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Wired magazine goes slavishly along with what it calls intercaps, though it draws the line at all caps.
The iPod was the grandaddy of this intercaps thing, if memory serves.
(By the way, the Ask* name is capitalized inconsistently, with big "Ask MetaFilter" intercaps above the date, "Ask Metafilter" with no intercaps in the title bar, and "Ask MeFi" at the bottom of the page.)