I know in some of my circles (mostly Tumblr) that some people actually practice what could easily be called “defensive metadata usage.” Goodness, I do this sometimes. (I also call it dummy tagging.)
Essentially, it’s the work of tagging things or posting them in such a way that they’ll only be found by the chosen few. (Most commonly, I see this when my friends want to discuss the negative aspects of fictional characters or canons.) This can be as simple as replacing vowels with punctuation (@ for a, ! for i, etcetera) or as involved as tagging things literally with “I am feasibly dummy tagging this.” (I tend more toward the latter for my rants, as in the Tumblr system only the first 6 tags are searchable by the general public, so I have developed a system of tagging nonsense in the first 6 tags and then putting the information for my friends to find the post [name, show, etc.] in the latter tags.) And this has me thinking: is there such a thing as defensive metadata in the “real world”? Is it used more strategically?
Would anyone be interested if someday I wrote a book on this stuff?