That Free Gas Postcard in Your Mailbox Could Be a ScamThat Free Gas Postcard in Your Mailbox Could Be a ScamThat Free Gas Postcard in Your Mailbox Could Be a Scam 

USA TODAY Network / Reuters“Free” is one of those red-flag words that should automatically warn consumers to proceed very cautiously. Prices at the pump hit nearly $4.33 a gallon across the country, according to AAA. So, it should be no surprise at all that scammers are crafting their way into our mailboxes with postcards promising free gas — and, yes, free groceries, too, since those prices have gone up as well. Sure…