Categories or tags, or about the possibility of multi-parameter categorization.

      As I wrote earlier , I was faced with the task of sorting out the information about the various methods of teaching foreign languages and on its basis to create the most optimal system for learning languages .
     The problem is that philologists, as humanists, do not pay attention to the classification and systematization of their methods. Since the issue has been more than one hundred years old, historically it turned out that the authors called their methods , guided by completely different criteria, or the method was simply called by the name of the author. When methodsthere were no more than one or two dozen, this did not cause particular difficulties, but at the moment, when their number exceeded a hundred, not counting minor modifications and improvements, even leading philologists can not get a sense of it. Moreover, objectivity is hindered by a very strong commercial interest, which causes endless ideological disputes in the style of “pointed against blunt ends”.
      And what does this have to do with Habrahabr ?, the attentive reader will ask. The most immediate. Only here people gather who are best versed in the creation and ordering of information on the Internet , taxonomy and folksonomy, catalogs and tags, and I really hope for their advice.
     So, the gist of the issue. I highlighted ten key parameters, with reasonable sufficiency describing any method ( in the form of a table - here ), and tried to compile method directories based on two blogging systems I know of, as I call them, i.e. representing on the basis of one engine the possibilities of both blogging and website creation. On  mylivepage e - this is a project of   PHILINGING , on   ucoz - the other day the launched site FILOLINGVIA
But neither there, nor there I can completely solve the problem of systematization and classification.
   Yukoz, in addition to more attractive design and technical capabilities (which, on the other hand, causes difficulties with management and configuration), provides chic two-level catalogs. Given that they are fully customizable and can be created in several forms, up to four hierarchical levels of information ordering are obtained:

1. Type of catalog.
   Directory section.
   Directory Category
   Catalog material.
     It would seem that what else is needed? Lay out methods on daddies and rejoice! What I started to do, but this did not solve the issue that I raised. After all, the Yukoz catalogs are rigidly linear and one-parameter, i.e. each material can be in only one category of the catalog. And if I want to classify methods by ten parameters at once, I can create ten sections, in them the necessary number of categories, but I will have to manually place each material 10 times in these sections, which, naturally, no sane person will do!
       Maybe instead of Yukoz taxonomy, folksonomy, which has become so popular, will help me? I tried the wonderful service mylivepage, known for its simplicity and democracy, and widely providing tagging capabilities. But there are even more problems. There is only one level of folders on the service, i.e. creating a hierarchical structure will not work in principle, and tags do not have any hierarchy by definition. If it were possible to create your tag cloud in any folder, or to be able to organize tags hierarchically, this would solve the problem.
      Those. I want to be able to assign any information to one or more tags from ten fixed lists, and the ability to organize articles in accordance with the hierarchy of these categories. For instance:
   “The West's method is   logical , direct , with the usually passive role of a teacher and explanations in a foreign language ,  individually - group , with emphasis on reading   , semantic , verbal-auditory ,  intellectually-communicative. »
   And further, if a visitor selects any of these tags, this material would appear in the list.
     But I do not know a service with such capabilities. And you?