Your third questions presents a genuine concern, in a world where bloggers appear to increase every day and everywhere. Audiences are key. Bloggers write to their friends, to people with a common interest, to people with similar problems, or, probably in the case of your question, to a general public. Often it is other bloggers who read and respond to these writers, but the "population" is probably too broad to define. The issue of credibility, more than anything, would separate this population, from one that relies on newspapers and traditional media for information coverage. As time passes, networks may devote a brief section of their coverage to text and video bloggers (which CNN does on a brief level already). This coverage may, however, be limited as the "opinion" section of broadcast news. Posting blogs is easy, and mostly free. There are no requirements to becoming a blogger, much more than being able to read, type, and connect to the internet. News networks invest education, money, time, marketing devices, and the resources of their office into publishing stories for the public. It may be impossible to replace networks with bloggers--however the inclusion of "gossip" and every day events may be finding platform in the form of human interest stories. Again, these issues are widespread over blogs, because a blogger loses no resources by publishing it. News networks have their money on the line.

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