Blackbaud has acquired Public Interest Data, an Alexandria, Va.-based company that provides a variety of informational services to the NFP market. These include database management, acquisition list, and data analytics and enrichment services. PIDI will continue to operate from its offices in Virginia and Miami Beach, Fla. Blackbaud is paying about $17.5 million, with another $2.5 million in contingency payments based on the performance of the acquired business.