pet food by post

I was trawling through the latest recommendations Amazon have for me, when I came across

The perils of low sample sizes, I thought: someone bought Grimm 3 and dog food in one order, so now Amazon thinks I want dog food.

A little later I saw

Oh, I thought, they bought bird food, too.

But wait!  This wasn't the Grimm-loving dog-owner, this was instead a Feist-loving bird watcher.

I’ve had some strange recommendations before, but this was just weird.