>>I've been working with this approach (top-level container)...it's really quite powerful, it replaces need for both _screen and application object. I use a top-level method to launch all other forms, assigning each a name declared as a top-level property. That way every form can communicate two-way with every other form, without need of forms collection or public vars. And it's a way to make a heirarchy in which a form/formset can "contain" other forms/formsets.
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>>Also, using LINKED means you only need to terminate the top-level to clean up.
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>It also solves the problem of instantiating identical forms simultaneously does it not?

Well, it makes it easy to keep track of since all form knowledge is kept in one central location...