Copyblogger makes a great observation about how newer social networking phenomena are becoming differentiated from old-timey blogging. It reminds me of when I was Director of Internet Services at Capital Newspapers and we first started getting requests from the newsrooms to add blogs and forums to madison.com (around 2001). From a programmer perspective, blogs and forums didn't really look any different than an article. But it soon became clear how much importance people place on the exact terminology used to describe "publishing some words on the web".