I LOVE it when there is a rebate on MY butter. They did this two years ago and I stocked my freezer full!
They do their rebates kind of strange. You will need to purchase one of the select Land O Lakes products (listed on the rebate form) and submit the rebate.
You will receive (via snail mail) a coupon for a free FREE LAND O LAKES® Cinnamon Sugar Butter Spread.
Offer valid 03/01/13 – 4/30/13.
As usual I would say go ahead and print the rebate form now  in case they pull it.