I cashed in my first $25 for Blockbuster certs. They arrived late and were for 6 subsequent weeks. I ended up only using two of the certs so they did not have anywhere near $25 worth of value to me. I am now at the point that I have enough for airline discounts. I don't fly UAL or Delta, but might for a discounted fare. Has anyone chosen the discount with UAL or DL and was it available without blackouts and for use with discounted fares? I think I might just take the Hilton points, but that would appear the worst value, yet the least restrictive of the rewards. Thanks for the help.