How to promote smartlink?

Samrtlink contains many offers and it always shows the top offers according to geo. But I don't know which one will shown when user open it and I am always confuse about it. I have no idea what kind of lander is suit for smartlink. Besides some affiliates prefer to use smartlink for remnant traffic or BBR and that confuse me too. Why don't promote it as a main campaign?Since it contains top offers, it should be work well than other offers, isn't it?