I'm still here, but not as often as I used to be. The SM changes over the last few years caused me to investigate other options. DL still gets approximately 50% of my domestic business, but I've defected to BA for most international trips. I had been using my DL miles for international upgrades until they jacked the price of an M ticket to ridiculous levels. I decided to burn the miles on AF first class for some award travel. It also helps that I don't have to play the MQM game as a lifetime silver. Whereas I was once totally loyal to DL, I find now that its nice being able to play the field.