@pichalite Tank's for this plugin !
I have some ideas for give more "utility" and webmaster control on it... I doesn't know if it's hard to add that but it would be very nice if :
We can add a list of tag sugestion on the admin panel and limit the usage of tag at this list. (Today lot of people use tag variation and similar...). And for finish this point, can choose the forum category for this tag and level user authorized to use it.
If possible, add a merged option on tag to merged similar tag on only one (and doesn't need to delete it).
With that, we can use tags for limit the number for subs forum. I can understand this ideas is not good for you but i want give you feedback. :).
Tank's for your contribution work and sorry for me english :s .