I got the same phone call this week. I've been a GM for several years, but this year my travel comittments went way down. The Delta employee asked if there was some reason why I was not flying with Delta as much, what did I like/dislike about the SkyMiles program, etc. He said that between now and Dec. 15 any travel I do will award me an additional 1000 base miles per segment for domestic, 3000 base miles per segment for international travel.