Various pictures that were is the default library. I deleted them and replaced them with 167 gogers' avatars.
Edit : this is not a real mosaic either by the way, just an illusion.
You know... each of those have been recoloured, which kind of defeats the point of a mosaic. Of course, otherwise the entirety of the "com" bit would have been made up of your and that "12" avatar. And the background would be only lowyhong (6), 9, 50, and 54. A few greens for the "gog" bit, and the rest of us wouldn't have been in it at all.
Edit: didn't read the edit.