The Motley Fool discusses corporations using blogging in "IBM in the Blogosphere."
The article quotes Brian Doyle, director of Corporate Affairs for IBM. "We're really interested in blogs and podcasts for a number of reasons: As an employer of 329,000 people worldwide, we want IBMers to familiarize themselves with these tools. ... [A]ny time we come across a powerful new way for our global workforce to communicate and exchange information, we're going to go beyond tacit endorsement and actively work to give our employees access to this technology." Speaking for myself, I've "met" (via e-mail and instant messenger) a number of IBMers who have read my blog and contacted me, so it is helping us communicate at least a little bit better.
I also like this quote from the article: "The company is more than just approving -- it's actually enabling employees to, say, blog." Hey, my ears are burning! Actually, it's mostly talking about the facilities we have for creating blogs and wikis internally, stuff which the public outside of IBM can't see. It's cool that the article is discussing blogging, but a little disappointing that it fails to distinguish between strictly internal communication and external communication from IBM to our customers, which I've found can benefit us internally as well.