We started setting up in launchpad, but we gave it up briefly.
The most important issue is: "the roadmap" is a very abstract concept at OpenGoo. It is what we discuss over here, on one-to-one discussions, over at meetings, what customers ask and are willing to pay for...
If we publish it, then we would have to strive to commit to it. We set up short-term goals, and let each developer go for it. It seems like innovation can better come through in this way.
So we try to promise little, and improve on what we feel offices need for better collaboration, productivity, and information management.