What are these fuzzy little squares which are now appearing on everything?

[CJ2010]

Has anyone else noticed these? There is one on my cereal box, my gas bill, my magazine...basically all products now seem to have them. Can anyone please explain what they are and their purpose. Thanks.

It's the cats who are bonkers, not us. They think the Martians are going to take over which of course is ludicrous. How can the Martians take over when the cats are doing such a good job of protecting us all?

I can't find one on anything I own! I want a small fuzzy square!

they're so wanky and i hate them, is it really so hard to google something if you want to see it that much