Iberia just sent out a offer for 2,000 bonus Avios for ticket purchase made on Iberia’s website after registering for this promotion between July 25-31, 2013.
You can only earn this bonus one time. You can access this promotion by logging to your My Promotions on Iberia.com.
This is a nice promotion for 2,000 bonus Avios for booking an Iberia flight. Remember that you ca transfer Avios between British Airways, Iberia and Avios accounts, although programs are different.