A few web apps college students should try. Campus network

Read Write Web has an article titled "Back to School: Apps Every College Student Should Try "article, the article recommended a few in the student should try the Web application, classic, and can actually help students study and life. In contrast, the domestic sites that once hung the campus head and sold vulgar goods were very sad, including the site that changed its name to human network some time ago. I believe you must have heard the argument that "campus network is not good to do", is it really not good to do? My son secretly thought that no one would do it, not "difficult to do" or "difficult to do."