There are feature stories about all kinds of unimportant things. No surprise that there should be some about blogs.
Blogs are important in one VERY limited respect: They are the main way in which some of the most politically sophisticated (or politically obsessed -- there's a difference) conservatives keep in touch with each other and share ideas. Also are probably the main news source now for some of these people -- myself included. But that hasn't made conservatives any more effective than they were. It's just hastened the speed with which they can react -- among themselves -- to the latest liberal outrage. There is no evidence that they have converted any liberals or moderates, or that they have had a real impact (except in a couple of isolated cases) on either the MSM or Republican politicians. Also, it's far from a uniquely conservative tool. The leftists have plenty of blogs too. In fact, these blogs are generally regarded as having much more impact than ours on the political process, because they're more oriented toward activism.