AIR FRANCE / KLM Flying Blue members can earn 250 miles when joining Opinion Rewards Club and completing your first survey. As you continue to take surveys with subjects ranging from travel experiences to business trends, loyalty programs and more, you’ll earn more miles. You’ll earn around 50 miles with each survey with a 100-mile bonus after you’ve completed your 10th survey.
Visit http://www.insideflyer.com/link/?11681 to sign up. You must be a Flying Blue member and reside in the United States.