Split Rock Partners: Split Rock leads $12M round for social-media customer-service startup

Venture capital firm Split Rock Partners led a $12 million investment in Sparkcentral, which makes software businesses use to manage interactions with customers via social media sites. San Francisco-based Sparkcentral predominantly targets big companies that have to prioritize responses, complaints, questions and comments via social media websites like Twitter. The company counts Delta Air Lines Inc. and Uber among its clients, VentureBeat reports. Split Rock Partners has offices in Eden Prairie…