Earlier this year I did an internal presentation about blogging. Some of the main points being "look, adults do it to, in real jobs and everything" and also that even if you don't blog yourself, you may want to consider other impacts: Reading blogs for professional development and monitoring them for your organization's market presence, Enabling your own content to be more bloggable, and Controlling through policy what your employees can blog (including comments they may make on their personal blogs). I also made a point that if the public moves to using more search engines that only look at RSS feeds, if you don't have a feed, you are invisible.
Anyway it's basically mostly a long list without a lot of context, maybe you will find it useful
In case you're wondering, this was all already wikied on my internal wiki, which I can't really expose, and as a bonus, every wikilanguage is different, so I had to translate it to post it on XWiki. Welcome to the world of wikis! No more HTML! Instead, a half-dozen incompatible wiki dialects.