[Luc]

It may not be the actual address - I noticed a shoe purchased a few hundred miles off the coast of Africa in an area without islands (I zoomed in to check!).

[andyking]

That's probably 0 degrees north, 0 degrees west, right on the Greenwich meridian and the equator, in the Gulf of Guinea. It's a spot that basically means "no data".

[Luc]

Ah, good one! The images don't correctly relocate when you zoom in, which might explain why I didn't notice the glaringly obvious dashed line...