Official blogs: Is anyone reading?

A recent (December 2007) analysis of candidate blogs revealed a surprising fact, considering the popularity of political discourse across various media: the number of people who subscribe to candidate blogs is relatively low.  While the article notes that the number of subscribes to a particular candidate's blog correlates with the candidate's relative popularity, the low number of subscribed readers indicates either that blogs are not as well read a campaign tool as the campaigns seem to hope, or not many people know that subscribing to RSS feeds can make keeping up with a blog much easier.