Ah well, it seemed reasonable to me because that was one of M66B's first guesses too. His first comments about this publicly mention guessing that it's favicons

Ah well, it seemed reasonable to me because that was one of M66B's first guesses too. His first comments about this publicly mention guessing that it's favicons, but I suppose he could have eliminated several other possibilities first. I think almost everyone would be agreement that Google can communicate better.