IBM is planning to introduce what could be the largest corporate blogging initiative so far, in a bid to encourage its 320,000 staff to become more active in online tech communities. The world's largest computer company has prepared a broad range of programs and online materials that staff can access to find out how they can start to blog. Behind the scenes, a small handful of technical innovators developed and deployed an internal blogging service that has grown in a period of just 18 months to just shy of 9,000 registered users spanning 65 countries, 3,097 individual blogs, 1,358 of which are considered active, with a total of 26,203 entries and comments -- all of which has been put together strictly through word-of-mouth promotion. And it's still just a pilot.