For instance, there was recently an offer where you could buy Cinnamon Toast Crunch at 25 participating retailers and receive a 300 SB rebate. Since Swagbucks offers $3 gift cards for only 300 SB, that means you could have cashed out immediately after redeeming this single offer. It's nice when a site doesn't have arbitrarily high cash-out hurdles!
They also have a ton of “any brand” offers, so you can get paid for food purchases regardless of the brand. They're effectively offering $1 rebates on any milk, eggs, and bread purchases for me right now.
As with other free grocery rebate programs, all you have to do is add the offers to your list, then snap a photo of your receipt within 14 days of purchase. Your SB will then be credited to your account and you'll then be able to redeem them for thousands of different gift cards, VISA cards, and other prizes.
At the very least, Swagbucks now gives us a fourth cash-back option on our daily food consumption. We can take a single grocery purchase and earn from four different websites – not too shabby!