[squeedles]

I large part, the sticker trend is so that people can distinguish one gray rounded slab from another. It is the reaction, not the cause.

[brailsafe]

I agree with you and ChrisMarshallNY, I think both can be true. I have a work laptop and personal laptop that would be identical if not for stickers, but at the same time I enjoy stickers because they lend personality to something that would otherwise look the same as every other one; I'm sure signalling plays a part for some people, but mine are all novelties.

[ChrisMarshallNY]

Maybe, but I always assumed that it was for the same reason that people put them on their cars.

They are really signals to others.

[brailsafe]

I think it can be either. Mine are all novelties that help me to distinguish my grey squares from each other and bring a bit of joy.