Hilton HHonors™ has created a promotion to help consumers increase their points. All you have to do is register your mobile phone and any eligible Visa® card, and you’ll receive special offers via text message when you use your enrolled card. Just for enrolling, consumers will receive 1,000 HHonors Bonus Points. In addition, you can earn 4,000 Bonus Points the first time you spend $100 with your enrolled card at any U.S. hotel or resort within the Hilton Worldwide portfolio of brands between now and June 30, 2012. You will receive up to two special offers each week via your mobile phone. If you decide that this is too much for you, HHonors allows you to opt out at any time.
You can enroll up to three eligible Visa cards, but Visa Buxx, Flexible Spending Account (FSA) Visa cards, EBT Visa cards and other Visa-branded cards whose transactions are not processed through the Visa U.S.A. payment system are not eligible to participate.
If you would like a list of Visa credit cards you can use, check them out here.