Select 20 articles from different categories and get 10x °P whenever you buy them until the end of the year.
http://aktion.payback.de/ag3/snlreal0904/index.php
And read the small printed note where they say that for every article worth less than 2 Eur they credit you 1 °P anyway, so for a single banana or a single apple you get 10 points now. I hope it works in this way as my brother is buying his lunch everyday at real and he really likes apples