Adding a few trailing characters to a post's title might enhance Search operations. I referred to this as tagging earlier, but perhaps (search) Targeting might be a better term.
One consideration that may be resolved with a bit more testing is... What characters can be used that are readily found via a search. I am quite aware of this since I've been "targeting" my Tweets for a very long time with hashTags made up of one of the 26 alphabetic letters + the _ character. That gives a base27 position, which the use of a second character expends exponentially ro 2^28-1 possible values. (note that 123 = 1x10^2 + 2x10^1 + 3x10^0).
Its also worth nothing that
* Permutations are distinct
* There are many more than 100,000 unicode characters that have readly recognized gylphs
* The UCS subset of UTF-8 has about 2.2 billion assigned values.
* English words (with a maximum length of 20 or a few more letters) are a very tiny subset of sunch a positional matrix, that could be thought of as an N-dimensional array in which each position corresponds to an attribute shared by all of the elements in a "colunn", "row", "sheet", "group" etc.
Most people think this is confusing, but its really just simple math and could easily be automated within TiddlyWiki.