Blogs for courting voters

I read in this week edition in Times Magazine that John Edwards is courting voters by using several blogs. According to the article he has spent the last two weeks posting comments in tmpcafe and talking points memo about globalization and poverty.
Even though Edwards is not running as a candidate, he is helping himself with technology. The interesting think is that he is not only commenting on several left leaning blogs, he also was the host of a dinner with several bloggers to talk about politics and gain their support. Apparently Edwards sees the impact and power that blogs have among politics.
As I see it politicians are trying to maintain their political image and spreading their political beliefs by using blogs. While many of us might believe that blogs lack credibility others like John Edwards rely on them to maintain political support.