Problems arise when volunteers get caught up in Cape Verde cultureISLAND OF SAL, Cape Verde-European tourists dressed in the latest swimwear tan along the wide Atlantic beaches. At an outdoor club in the capital of Praia, on the island of Sao Tiago, men strumming acoustic guitars entertain customers sitting atop a cobblestone patio, a scene from a waterfront cafe in Seattle or a jazz club in the New Orleans French Quarter. This series of islands, which together are about the size of Rhode Island, sits 300 miles off the African coast, but it's nothing like the rest of the continent:...