-register and take the survey to get $20 in rewards. With that reward you can get one of these subscriptions:  AFAR, Arthritis Today, The Red Bulletin, Golf, Travel + Leisure, Cigar Aficionado,  Wine Spectator, Garden & Gun, Golfweek, People, Robb Report, and Us Weekly.
You can also enter 5 emails to get $15 more in rewards. You can do that once a week.
Update – they added Travel + Leisure and Garden & Gun Magazines.