Say you want to apply an action filter to every action except one. How would you go about it? For example, suppose you want to apply an authorization filter to every action except the action that lets the user login. Seems like a pretty good idea, right? Currently, it takes a bit of work to do this. If you add a filter to the GlobalFilters.Filters collection, it applies to every action, which in the previous scenario would mean you already need to be authorized to login. Now that is security you can trust! You can also...