I recommend this excellent paper, 'Blogging the Market', by George Dafermos (PDF is here), especially if you are interested in the topic of blogging in the context of marketing and CRM.  Also has some great insights into the trend of internal blogging by employees (as a knowledge sharing / communication platform inside the firewall).

I need to digest and suspect it won't be my last post about this paper.  Would welcome any views by anyone who has read it!