http://www.thenewpr.com/wiki/pmwiki.php
A "repository of relevant information," it is a "wiki-style" open forum
Focused on the "art and science of corporate communications"
From the president of Makovsky + Company, musings on everything from new media to the work life/personal life balance
http://blogs.hillandknowlton.com/blogs/leobottary/default.aspx
Client services-centric
http://www.edelman.com/speak_up/blog/
So comprehensive, it's a virtual RSS feed
All the measurement news that's fit to print
http://h20325.www2.hp.com/blogs/kintz/
Marketing best practices from Hewlett-Packard's VP of global marketing strategy & excellence, Eric Kintz
http://blogs.sun.com/roller/page/jonathan
Jonathan Schwartz, CEO of Sun Microsystems, helps define the role of blogging in CEOs' daily routine