As the Northwest Airlines WorldPerks program has been integrated into the new Delta Air Lines SkyMiles program, so have the two FlyerTalk forums combined into the new Delta Air Lines SkyMiles forum, where one can stop by and read the comments lamenting the end of the Northwest WorldPerks frequent flier program, as well as optimistic comments pertaining to the new Delta Air Lines SkyMiles program.
Both the old Delta SkyMiles and Northwest WorldPerks forums are still intact as sub-forums of the new Delta SkyMiles forum.