I only have a Discover debit card. Discover pays 1% back on its debit cards, which is unusual. I have idly wondered why they did that. The fact that they're

I only have a Discover debit card. Discover pays 1% back on its debit cards, which is unusual. I have idly wondered why they did that. The fact that they're not subject to the restrictions on debit fees makes it clear why. I shop for name brand stuff at Winco, a grocery chain in the Northwest US that doesn't take credit cards and makes you bag your own groceries. I'll be curious to see if they stop taking Discover debit cards if the fees increase.