No, this isn't a good idea.
Look at the sections under the "real" Sony Reader Forum. Are we going to have different "Content" questions? How about different "Accessories". We already have 500 vs 505 folders for the development stuff that is different.
I agree that it's complex and there are reasons you might want to choose a forum versus a folder. None of those reasons have been explained, however, so there isn't much justification for this choice.
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