I don’t think it has been well promoted but a really cool feature in Revit platform 2010 is the ability to Open a central file and in that sequence make a local copy instead. Whenever you use the Open dialog to browse to a Revit central file, the Open dialog will sense the status and give you the option of creating a new local file. The newly created local file will be store according to a setting in your options. I believe the default is under My Documents but it looks like it could be anywhere. Not only do you get a new local file but it also appends your username to it.
This is the project name - central.rvt
This is the project name - central_username.rvt
Anyway, cool new feature. Good job guys...