I got an email from Disney Visa today about signing up to pay specific utility bills (internet, cable, phone service, insurance and utilities) and earning 4% between April 1 and August 31, up to $500. We just decided to book a trip over Christmas break, so I'm all about that! Unfortunately, every time I've clicked the link to sign up, it says the site is undergoing maintenance and is unavailable.
I'm totally with the OP though, if I do this, I would probably AT LEAST pay the bill once a week to keep up with what we are spending. I'm just not disciplined enough to hold that money back in my checking account until once a month when it's time to pay the Visa bill. I would like to try what others do and use it for everything...groceries, gas, restaurants, the pet store, anywhere and everywhere I use my debit card. That would add up to a nice chunk of change for our trip in December.