Sorry if the
title of this is not clear. Here's my scenario.
I want to create multiple sites (will use 3 as example) with the following content filtering.
www.main.com - serves all content
www.usa.com - serves content that is tagged or categorized as US-only content.
www.uk.com - serves content that is tagged or categorized as UK-only content.
From slave domains (e.g. uk.com), new posts MUST be forced to be UK-only. This leads me to not want to actually use Tag or Category as defined in WordPress. Perhaps use a Custom Field to manage this?
From master domain (i.e. main.com), new posts will be generalized as GLOBAL, and only the Administrator can reclassify to their local domain. This means that in a case where we don't have "canada.com", Canadian content will appear under main.com until such time when Canada.com is available and we can then reclassify it.
Or perhaps there's a free plugin that can help with content filtering?