Like email and the World Wide Web in their times, blogs have become the “killer app” of the moment. Three years ago, all but the most hardcore of followers of Internet phenomenons would not have thought much of the term “blog,” other than perhaps it was a misspelling of “blob.” Now you know you are most certainly not a mainstream Internet user if you are unaware that “blog” is an adaptation of the term “Web Log,” and that blogs exist as personal journals, professional writing spaces, news sources, or some combination of all of the above.