Black Friday shoppers could encounter deferred interest programs when shopping this holiday season. This is a plan that lets shoppers buy it now, put it on credit, and not pay interest for 12 or 18 months. What should people think about before signing up for this type of financing? Wallethub Writer & Analyst, Chip Lupo, joins D2 with the pros and cons of deferred interest programs. When have you been stung by deferred interest? Listeners are invited to call in with their answers.