As of May 1, 2012, MileagePlus is providing 100% earnings on SK metal (except for select Norwegian markets) even on the cheapest economy fares. Previously these fares earned 25% credit in the program. The fare classes which now earn include: G, K, L, O, T, U and W. Also, business class fares now earn 175% RDMs and full fare coach earns 125% RDM. A nice improvement, indeed. ^^ These improved earning rates for SAS are reflected in the various earnings calculators available in my Wandering Aramean Travel Tools site, too.