Pay $9 for two years of Popular Science with this livingsocial deal – this is even cheaper than the last discountmags deal (and I didn’t think anyone could beat their prices!).  Normally you see wording about new subscribers only, but no such wording here.

Limit three per person; additional three as gifts.  If you are buying multiples, make sure you hit the $25 threshold and then enter AUG10 in the redeem code box – you’ll get $10 taken off on your final payment page and end up paying only $2.84 per year (I tried it and it works)!