The Economist magazine has offered bonus miles with a number of airlines to get people to sign up for their yearly subscription.
Now, the magazine has (re)launched a triple miles offer with Iberia Plus. You can get 13,200 Avios for a one year print subscription.
You can access this offer on The Economist’s website here.
Note that the price of the subscription varies by country. Below is the one for the US:
The Economist is one of the few magazines that I try to read every week, filled with information from around the world. It doesn’t hurt that they often have these promotions with the airlines making the net price very affordable after you subtract the value of the miles.