I've got the same question and I am really really stuck. After a few months of building my DNN site betting on the multi-lingual and multi-portal capabilities, and really need to tag things, for Q&A module which will be integral parts of my communities and other features
So, already a problem of not being able to manage these tags per portal, and not being able to restrict the dictionaries by language...
In a related issue, I do not understand why for a multiplatform solution, the central core Tag dictionary is Application scope, and not platform scope. Since I'll be running really different content sites, I would not want users getting the tags which do not apply to them i.e. someone talking about Dreams and their interpretation, getting proposed Dreamweaver as a tag...
What can be done ? Who must I beg to get this implemented ? (does not seem to be a huge development!=
I really do not want to manage 3 installations just for the tags..
And yes, I am willing to wait, since my site is still in heavy research and development.