Are you interested in Web 2.0? Maybe you are taking a course on the topic soon. Hell, maybe you are teaching a course on the topic soon ;) Whatever it is, last month the new-to-me but old-to-the-internet Journal of Computer-Mediated Communication had a special issue on social network sites. Besides just trying to tackle the problem of defining a “social networking site” – which at least is a more manageable task than defining the mostly meaningless in my mind phrase “Web 2.0” – there is a a somewhat interesting study of who, demographically, does and does not use social networking sites. There is also an interesting article on identifying what in practice causes a reader to react to an email as a flame that connects nicely with a recent article in the New Scientist Blogs summarizing research on why people flame online when they would not behave the same way offline. Good stuff to bookmark and read when some free time comes along….