Don't know how much you so, I will be detailed:
My husband travels a lot and sign up for the Hilton Honors (also called HHonors) program that allows for point earning opportunities when staying at a Hilton hotel. You can exchange these points for things such as: airline miles (xchange rate varies by airline), car rental, Amtrak, hotel stays, and even Disneyworld/
Disneyland tickets. You can browse their site for details.
Anyway, right now every quarter I believe you can update the profile you signed up with and earn 1000 HHilton points. These are posted to your account immediately. Right now, Hilton is allowing you to update your profile twice to earn a total of 2000 points.
Today, I updated my email address and street address (ex: spelled out street instead of st.) and was given 2000 points total.
2000 points in itself is not a lot, but done every quarter will add up after a while.
Here is a link that I use for free airmile offers. Hope this helps. The Hilton one is towards the bottom of the page. Have a great day.
http://www.hotdealz.com/FreeAirlineMiles.shtml