This offer is surely targeted so watch your mailbox / inbox for it. I have an American Express Hilton Surpass Card.

Dear MilesQuest,

Enroll today to earn 10,000 Hilton HHonors Bonus Points when you redeem points between August 1 and September 30, 2010.

Step 1. Enroll by September 30, 2010 at americanexpress.com/hiltonpromotion and enter RSVP code XXXXXXXXXXXX. Or call 1-800-794-1308 and refer to promo code 159910001.

Step 2. Redeem at HiltonHHonors.com for a stay at any Hilton Worldwide Property – over 3,400 locations worldwide.

Step 3. Earn 10,000 Hilton HHonors Bonus Points the first time you redeem between August 1 and September 30, 2010.