You can get bonus American AAdvantage miles for joining PointsHound

If you book a hotel reservation through PointsHound using this LINK, by March 31, 2015, you’ll get 2,000 AAdvantage bonus miles on top of the miles you earn for the hotel booking. And you’ll get 100 AAdvantage miles just for joining PointsHound, even if you don’t book a room.

The hotel checkout must occur by Jan. 31, 2016 and the offer is open only for a first time sign up and first time booking on PointsHound.

INSIDE|Point: PointsHound normally offers 1,000 miles as a joining bonus after your first hotel booking so this ups that offer. PointsHound offers miles for hotel stays and you are still able to earn your usual hotel points through your hotel program.