Jon Corshen, CEO of a new academic social-media network, says students don’t want to be friends with their professors on Facebook but are left with few alternatives for interacting with instructors on the Internet after class time ends. So he created a space on the Web for students and professors to “meet up” outside the classroom. In two years, Mr. Corshen and his team have raised $7-million in venture capital, from Granite Ventures, Omidyar Network, and other investors. The Chronicle caught up with him to talk about the ideas behind the online academic platform, known as GoingOn.