iD, instructs the users browser to fetch an image from graph.facebook.com. The problem is that this tells Facebook that you're interested in a certain brand, if you're logged into Facebook, then FB associates the two. We all know that FB grabs and uses and assembles every bit of information that it can, even repeatidly breaking the law.

Adding a Mothercare shop on OSM shouldn't result in Facebook showing you baby/pregnancy adverts, but here we are.