I know I’m very late to the game since I received the e-mail about this on 12/29 and it was posted on Flyertalk at least a day before, but for anyone who missed the Hilton 1Q promotion please sign up.
It is nothing spectacular,
Make every night you stay count for more. With the More Points promotion from Hilton HHonors™ you’ll earn 1,000 Bonus Points for every night plus an additional 5,000 Bonus Points for every weekend* stay of two nights or more at participating hotels and resorts through March 31, 2012. And with ten distinct brands worldwide, you’ll have thousands of places to make thousands of new memories.
but if you are staying at the Hiltons anyway might as well get more points.