If you plan a stay at a Hyatt:
Hyatt will contribute 5% of all Gift Card revenue from purchases on certificates.hyatt.com from June 1, 2007 - July 31, 2007 to the Make A Wish® foundation... Hyatt Gift Cards can be applied toward any eligible purchases at participating Hyatt Hotels & Resorts and affiliates in the US, Canada, and Caribbean. Hyatt Gift Cards do not expire.
http://www.hyatt.com/hyatt/specials/...?category=9000