When answering a question posted by an anonymous student, if they upvote your answer, you get a notification saying who upvoted your answer, with their actual name. Additionally, it seems that the anonymous names that campuswire gives in the comments (like azure-hippopotamus-25), are the same for a person from post to post. So if you figure out who that person really is, you'll know all their comments. These two things need to be changed for students to be actually anonymous on campuswire.