Starbucks' Black Friday deal shows us that loyalty mechanics can brew good things outside of formal loyalty programs.
This Black Friday, Starbucks is offering a special tumbler that can be used to get free coffee every day in January. That's right my caffeine-addicted friends, for the low, low price of $40, you can enjoy a shiny new 16-ounce tumbler and get all the free, grande size drip coffee (or tea) you can drink for 31 days in a row.
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