I'm using Precise (12.04.1) and I'm using Unity. I have 3 workspaces. I want a particular window/application (say firefox) to be present on all workspaces. This is easy to do on something like LXDE (e.g. Lubuntu) where I just have to right-click the titlebar and select "show on all workspaces". Then no matter which workspace I move to, the desired window/app is present on each one. I can't find a way to do this in Unity. Please help.