From web designer Yugo 'Yugo P' Nakamura. explains that the site is for Japanese telecom KDDI.  "Users are providing the images behind the big image ... The submissions become an enormous composition of a woman, and the individual tiles can be viewed as the screen zooms in on various parts of the mosaic. Currently over 51,000 make up the main theme, "Look," with the next theme slated as "Talk." Once you upload your own image or video, you can blog it—and have others' contributions create your mosaic."

I can't quite figure out what I'm supposed to do or think after my experience on the site.  Perhaps viewing it out of context [not living in Japan] puts me at a disadvantage.  Nevertheless it's a nice use of user-generated-content.  And I like the aesthetic.  Reminds me of a previous post about Onitsuka Tiger.  Worth a few minutes.