Meijer posted on Facebook today:
Get a free jar of peanut butter with our mPerks coupon today!
Sign up or log in to your mPerks account at http://bit.ly/mPerksMysteryOffer, enter offer code FREEJIF and clip the coupon for a free Extra Crunchy or Creamy Jif Peanut butter (16-18oz)
Click on the link below to log into your account, enter offer code FREEJIF, then clip your coupon. Must be redeemed by August 8th.