Here is a video with some good advice on B2B blogging from Andy Sernovitz, author of "Word of Mouth Marketing".

Here’s a quote from the video that I really like. It’s from Matt Dickman.

"A way for B2B companies to get involved is really to listen first…There’s no need to create a blog the first day…Start listening…Where are your customers looking, where they’re find information about you and go from there"