IBM has a research project called “BlogMuse” that’s supposed to help you find your employees’ blogging topics. They also published scientific paper on the topic (that’s hosted in redmont):
In order to inspire the creation of blog posts, we developed a novel topic suggestion system that connects blog readers with blog writers through sharing topics of interest.
The new software will ask your readers to propose topics and forwards those to the authors that seem to be the most promising ones plus it takes a look at your old blog posts for inspiration. It’s currently in an in-house testing phase as IBM and I’m cursious about their report they’ll deliver in april at CHI 2010.