Tim Van Tongeren gives an example of how posting project information publicly can open up communicaiton on the project team

This just won’t happen if the plan is sitting in a scheduling tool (MS Project or your favorite flavor) on the project manager’s computer. Not even when the plan is on a network.

When information about the project is visible, everyone on the team can see what’s going on and everyone on the team becomes involved in solving problems.

Nice example of creating visibility so we can start seeing software.