I have had a nagging feeling for some time that I may be ignoring useful qualities of TFS Workspaces. The site here provides some great background on what they are: http://www.woodwardweb.com/teamprise/000333.html.
However, given this information, I don't really understand when I ought to create a new workspace. Do I create one for each "project"? Do I create one for each project-branch? Do I need to create mirror workspaces on every machine that I intend to work on? I'm not sure what I need to consider when making this decision.
Is there a best practice describing under what circumstances to use different workspaces?
Note: although it may be interesting to learn what practice others follow, I am more interested in learning about how to make the decision myself. I'm not really asking "When do you create new workspaces?". Instead, I am asking "How do I decide when to create a new workspace?".