Just got an e-mail from AMEX offering me 25K points for upgrading my business gold card to platinum: 25,000 Membership Rewards bonus points applies to your first purchase on the Business Platinum Card by 12/31/11 and is available for first-time upgrades to Business Platinum Card only. You are eligible to earn bonus points for only one Card account. Additional Card members are not eligible. Bonus points will be credited to your Membership Rewards® account 6 to 8 weeks after your first purchase. No minimum purchase required. Bonus ID 5672. ------------------ I've thought about doing this for the other benefits of platinum, but I'm wondering if there's a way to get even more miles out of the deal. Is there?