American Express is now offering a promotion with 3 free hotel nights if you apply for their Starwood Preferred Guest Card. The card features:

• Earn 10,000 Starpoints® with your first purchase — enough for up to 3 free nights at a Category 1 or 2 hotel
• Plus– earn an additional 15,000 Starpoints when you spend $15,000 in 6 months
• Use Starpoints for free nights and upgrades at over 825 participating Starwood hotels and resorts in 95 countries
• Transfer Starpoints — almost always on a 1:1 basis — to the frequent flyer programs of over 30 major airlines
• Earn one Starpoint for every dollar of eligible spending and double Starpoints at participating Starwood properties and retail outlets
• First year fee is waived

You can redeem the first 10,000 points for 3 nights at select hotels, or you can redeem them for a instant $100 gift certificate from Amazon. Visit their application page for more information.

If you are the owner of a small business, Starwood also has a Starwood Business Preferred Guest Card.