It looks like you get miles for subscibing to "La Tercera" and "Qué Pasa". La Tercera is a newspaper, Que Pasa is a magazine.
the offer is 5000 LanPass KM (total) for subscribing to the newspaper for 7,500 (peso?) per month OR subscribe to Que Pasa and just Saturday and Sunday editions of the paper (for 9,200 /month).
It is more expensive if they have to ship it out of certain zones.
Hope that helps.