We haven't had any requests for this specific functionality. However, a related problem is that our legal department is pushing for a disclaimer before anyone uploads photos for PhotoBook. The lawyer has specific requirements: The date and time that the "Accept" button was pressed and storing the users' password at that time.
Its pretty simple functionality but I think there might be a need for a general "Policy Acceptance" package that could be used for classes, profile info, as well as more non-dotLRN eccommerce type uses.
