For those who collect Hilton points or will be doing so to prepare for transfer to US during GS2011. bonus points on stays over 2 nights, up to 4x points on 4-night stays. Jan 3 thru end of March. Must register first. My experience has been that Hilton promos are combinable with property-specific promos such as double points for specific hotels. I don't have a list of these for Q1 2011 but will post if I find one. Not truly stackable because a 4x Quadruple Points promo on a 2x property-specific adds the bonuses rather than multiplying, but can still be quite lucrative, especially considering how many HHonors points you need to transfer to US. Also in the past Hilton has given promo credit for stays booked before promo registration but completed after.
All in all, with a little planning this can become a good stockpile awaiting transfer!
http://boardingarea.com/blogs/loyalt...q-1-promotion/
List of
non-participating properties (there are a fair amount, so choose wisely, although it's probably not that big of a percentage when compared to all Hiltons all together)
http://hhonors1.hilton.com/en_US/hh/...ls_q1/index.do