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I prefer flexible points to cash rewards. You can use your points for cash. I can use my points for cash, travel, merchandise, statement credits, or gift cards.
If I did decide to use my points for cash, however, I would probably apply it in the form of a statement credit since that is where most of my checking account balance goes anyway, to pay statement balances. So I pay less that month, keeping the cash in my bank account.... this saves a step over having a check sent or deposit made to my bank account, and then, after waiting for this to show in my checking account, paying my full statement balance.
its certainly a great way to save even if it is a few dollars