Sure. How many tags are in your system? The number of tags should be more or less similar to the number of non-leaf nodes in a hierarchy, or else you aren't ca

Sure. How many tags are in your system? The number of tags should be more or less similar to the number of non-leaf nodes in a hierarchy, or else you aren't capturing the same information. Any tag that applies to more than half of the files is probably useless. On my blog, the tags "blog" and "technology" are definitely useless. That's fewer than 250 entries and already it has cruft. Were people consistent when they added tags? Does your system suggest tags automatically? Is this actually a full-text search minus stop words? Is there a librarian who cleans up after you and merges tags that have the same meanings? Would the full-text search be more useful than tags?