Starbucks is teaming up with Foursquare and the (RED) organization to fight AIDS with the largest non-profit campaign in the history of social media check-in service.

Under the campaign, announced this morning, the coffee retailer will donate $1 to the Global Fund for every Foursquare check-in at Starbucks in the U.S. and Canada from June 1 through June 10, up to $250,000.

It’s an interesting use of social media to raise funds (and awareness) for a cause. It’s also a savvy move by Starbucks that could result in more people coming to its stores.

The campaign is part of the “(RED) Rush to Zero” campaign, aiming to ensure an AIDS-free generation by 2015, addressing one of the eight UN Millennium Development Goals. Starbucks says it has separately contributed nearly $10 million to the Global Fund since 2008 through its partnership with (RED), the group founded in 2006 by Bono and Bobby Shriver.

More details on this campaign page.

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