Tweeted: "Book your travel on http://www.bestwestern.com and use TWEET1 promo code for potential rate discounts. A special reward for our followers!" 15% discount for the random hotel that I checked. Better than 10% AAA discount.
That didn't work for me, nor did Twitter1 or WEBONLY (perhaps because I was booking a European hotel) but Costco worked wonders. And I didn't even have to buy Pizzaman's diamond ring!
You can click through Fat Wallet for 3% cash back, too. I do this (when I don't forget), and it's been a pretty nice chunk of change. Has always paid, too.