Blogs are also highly used in social computing concepts in order to understand human behaviors amongst online communities through a concept called social network analysis. Social network analysis (SNA) is "a discipline of social science that seeks to explain social phenomena through a structural interpretation of human interaction both as a theory and a methodology".[6] There are certain links that occur in blogs, weblogs in this case, where they have different functions that portray different types of information such as Permalink, Blogrolls, Comments, and Trackbacks.