CVS/pharmacy has a new promotion to help you save more money on purchases. From Sunday, Sept. 16 through December 15, members of the FREE ExtraCare loyalty shopping card can double the value of quarterly ExtraBucks rewards simply by choosing to participate. That means you can earn 4% back on purchases, instead of 2% of nearly all dollars spent. Sign up online at CVS.com/doublebucks or in-store at the ExtraCare Coupon Center. The rewards points will be paid out starting on January 1, 2013, to use to buy just bout anything in the store. If you don’t already have an ExtraCare shopper card, this is a good reason to sign up.