Starwood has a double Asia Miles promotion going on until Jan 31, 2013. This is run off the China SPG site, so as you would expect, it’s clunky and slow. They also spell “Asia” wrong. (It’s not Asian Miles, SPG!)
Sign up here: http://www.china-spg.com/asiamiles/en/
First two hundred registrants get 750 bonus miles, but I’m sure that’s already occurred.