If you care about influence and where traditional media and new media are going check out what Colin Byrne of Weber Shandwick says about this report (I checked but not yet available from Amazon - as Colin says the official launch is tonight so maybe available tomorrow).
Business people need to look carefully at how the public are choosing to obtain, use and distribute information. The 'Blogoshere Daily' has a far higher circulation than any publication. Any PR or communication plan that fails to include blogger outreach and social media elements risks missing an increasingly important channel. If wanting to communicate to younger people it maybe the only way judging by their use (or lack of it) of print and broadcast media.