Non-English speakers might want to provide their own stop words
If a wiki centers on a particular domain, there might be stop words specific to that domain.
Whatever the case, I think that a) the list should be provided via a tiddler, and b) said tiddler should be able to be built from a transclusion of a separate tiddler. I have several plugins that use stop words, and I would rather have a single data tiddler that's used to derive custom stop word lists for each plugin rather than needing to update several separate lists.
Custom stop words are useful for several reasons:
Whatever the case, I think that a) the list should be provided via a tiddler, and b) said tiddler should be able to be built from a transclusion of a separate tiddler. I have several plugins that use stop words, and I would rather have a single data tiddler that's used to derive custom stop word lists for each plugin rather than needing to update several separate lists.