Starwood Preferred Guest members can earn a free weekend night for every three stays at any Starwood property. Register and stay three times between May 1 and July 31, 2010 and you’ll earn one free weekend night that can be redeemed for a Friday, Saturday or Sunday night stay through Dec. 19, 2010 at over 920 category 1-6 SPG properties worldwide. Free weekend night redemptions at some properties in Africa and the Middle East will be eligible for a Thursday, Friday or Saturday night. There is no limit to the number of free nights you can earn. Complete the required registration at http://spg.com/freeweekends and visit http://spg.com/fwterms for details.