Starwood Hotels are primarily Sheraton and Westin hotels. Their hotel program is the best out there because you can use points to book hotels online and if rooms are available you can book them. Currently Clickrewards is offering 2 Starwood points for every mile redeemed until March 31. Many posts have talked about transferring Starwood points to airline miles which is one option, but I value them for getting hotels in cities with expensive rates. Examples of redemptions I've used, Miami $150 room, 3000 points, Amsterdam $350 room for 7000 points. There is a 10,000 clickreward miles limit allowed for the double Starwood point transfer. For a $500 donation to the WWF you will get 20,000 clickmiles and you can redeem them for 20,000 Starwood points (about a $1000 value) and 10,000 miles in an airline program. Great deal!