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Del.icio.us, the social-bookmarking website people use to track, categorize, and share their favorite webpages, is testing a new version. But did its engineers really mean to give the whole Web a glimpse of the redesigned site by snapping photos of the usability lab? It's hard to make out details of Del.icio.us 2.0, but we know this much: As insiders have been hinting for a while, the pink highlights showing a bookmark's popularity are gone. (Photo by nzdave)