Turn this way for blended fruit smoothie drinks: Starbucks explores another revenue stream as coffee-bean crops increasingly come up short.

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roponents of same-sex marriage are planning to swarm Starbucks locations on Tuesday to counter Chick-fil-A's record sales last week. Last Wednesday, the fast-food chain enjoyed a surge of support from the likes of former Arkansas Gov. Mike Huckabee and Sarah and Todd Palin during what was dubbed Chick-fil-A Appreciation Day, after the company's president Dan Cathy went on record backing the "biblical definition of the family unit." So far, nearly 28,000 people have signed up to attend the Starbucks event, which was organized by Equally Wed, a gay and lesbian wedding magazine. The coffee purveyor, which is headquartered in Washington, early this year threw its support behind the state's push to legalize same-sex marriage. The law will be voted on in a November referendum.