CorporateBlogging.info has a short article discussing IBM's internal blogging system, including a couple of screenshots. Unfortunately it didn't include the logged-in view of the internal blogs, which shows a personalized view of recent posts, responses to posts, and responses to comments.
As I mentioned last week, our internal blogging system runs on a customized (and horribly backleveled!) version of Dave Johnson's Roller blogging software.
Thanks to Michael Lowry of IBM Sweden for the heads up (via his internal blog of course!).
Update: James Governor of RedMonk posted some commentary on my comment about IBM using backleveled Roller software internally. James Snell and I commented with some additional context.
Technorati: corporate blogging, ibm blogging
A glance at IBM's internal blogs