For registered My Starbucks Rewards members only (you must pay with your Starbucks card), participating Starbucks locations will offer a Starbucks Tall Hazelnut or Caramel Macchiato for free via this printable coupon (you can also show it to the cashier on your mobile device). That's among the best freebies we've seen from Starbucks, although we saw a free latte without a members-only clause in October. (Last month, we saw a free coffee for Facebook members.) There is a limit of one per account. Deal ends March 26.