Best Western and United have a promotion out that allows you to earn 750 United miles with EVERY stay and get Gold Elite Status at Best Western. The promotion runs September 10, 2013 until November 19, 2013.
Now Gold Status sounds great but it does not get you much unfortunately at Best Western. Not many benefits are listed and since Best Western properties are owned and managed individually the benefits vary from hotel to hotel. So it's non-sense.
However Best Western has some good, cheap properties that can make a lot of sense. I was very happy with a number of Best Western stays in Osaka last year.
Best Western has no BRG program so you can't match prices from OTAs. However the prices on bestwestern.com are mostly competitive.
Here are the Terms & Conditions.