Registration for the Starwood Power Up promotion is now open. Most business travelers who stay at Starwood will earn 20,000 Starpoints without modifying their travel patterns.

Go to http://spg.com/powerup to register.

Details on the promotion, as I posted previously:

With the SPG® Power Up promotion, you’ll earn 2,000 bonus Starpoints® for every four eligible nights you stay (up to 8,000 bonus Starpoints and 16 nights). You earn an additional 10,000 bonus Starpoints when you hit 20 eligible nights between January 15th and April 15th. Nights will accrue across multiple stays.

Additional discussion on FlyerTalk: http://www.flyertalk.com/forum/starwood-preferred-guest/1416757-spgs-power-up-promotion-bonus-starpoints-jan-15-apr-15-2013-a.html