Airberlin, Etihad and Lufthansa frequent fliers have been able to earn 100 to 150 miles per hotel review left on HolidayCheck.com website already for quite some time.
Now, American Airlines frequent fliers can earn 70 miles per review left for up to 10 review per month.
You can access HolidayCheck.com website here.
Note that HolidayCheck.com may require you to prove that you have actually stayed at the hotel that you review by sending a copy of the folio.
This is a great way to keep AAdvantage miles on those family accounts live that haven’t had any activity for a while. One review will extend the validity of the miles by 18 months,