You can earn AA miles for surveys at Opinionplace.com.

You can also earn Go Points!, exchangeable for AA miles, at Igougo.com. You earn Go Points! for writing quality travel reviews, how apropos! IIRC, the exchange rate for miles v. money gift certificates was so skewed that I could never bring myself to use my points on miles. Just confirmed current rates- yeah, those ~25,000 Go Points! can either get you 5,000 AA miles or $100 at Amazon. Depends on how you value things!