And it builds up "associations" according to what people buy, and how they rate items.
So in order to play with this system and make people buy a larger spread of items, I have FOUR timtes, bought an Ultraviolence CD at the same time as an OMD CD. Ultraviolence is hard core dark techno/industrial, and OMD a fantastic 80s electro group (they done Enola Gay, remember?)
I don't know how much I need to do to get it so that when a person clicks on an OMD album, it states, "People who also bought an album by OMD, also bought albums by these artists: Ultraviolence"
So if anyone wants to aid me in my fun, stupid and subversive game, do the same as I!