Multiple "view pattern" of tags

tags is very important, both for bookmarking the website and organizing the personal files.

I can see no reason that tag2find only solve the second task.

There are some suggestions for the "view pattern" of tags

1. Matrix Pattern for the Tags clouds,
I suggest that, besides the clouds itself, there are two choices line of tags,

first, the horizonal line (on the top) is trivial for temporary "tags clouds", which interprete the "intersection" function of tags.

Second, another line, the verticle line (beside the cloud) should be considered, which will interprete the "union" function of tags. Explicitly speaking, when you click the tags in the clouds, these tags will first appear in the verticle line, and the showing files are combined with the "union" of these tags. i.e. this file maybe belong to the first tags in the verticle line, and that file maybe belong to the second tags in the verticle line.

And then, the horizonal line will show the tags which has the intersection with that "unions". Once the user click the tags in the horizonal line, the "intersection" function will be applied, just like what we do now.

II. Folders view of Tags, Once users name some tags as the "folders", and define their hierarchies structure, the user will be able to see that recursive nested view. Yahoo bookmarks now has enable such function, but they donnot understand that, "Folders" is just another view of Tags, so the same named Folder and Tag will be different in Yahoo bookmark. But this is unnessary for our brain.

Further, such hierarchies structure will satisfy the theory of psychology. That is, once you tags a file with "2.1.1" (for example), then this file will be automatically tagged with the upper tags in the hierarchies, such as "2.1" and "2" . This is the ecnomical philosophy.

III. RoadMap view of Tags: to indicate the logic structure of tags, especially useful for academic and universities.