Hey @u1mp3 ,thanks for replying!
Sorry, perhaps I explained myself badly.
I know Bryan’s system and i have already implemented it…that’s why I’m writing: [[tags]] 
My issue is regarding the always increasing number of those [[tags]] ( links) which is bothering me.You know,there can be an infinite number of possible concepts, and it would be impossible to analyze the enormous amount of new possible MOCs.
But,on the other hand, I don’t really want to get rid of the least connected entries either.I see those as meaningful concepts/possible MOCs.
Maybe i need to go one level of abstraction up?
For example,instead of creating an entry for a philosophical concept of [[Universals]],i could go one level higher by writing [[Ontology]],or even higher by writing [[Metaphysics]],which subsumes the other two concepts.
Which rules one need in order to not mess up the whole metadata thing?