But some things are too arbitrary to have merits or demerits in any of their variations. Language and linguistic things are to a large extent like that.
@Cerberus So do you use umlauts in English writing to solve other problems too? That's like introducing a new tool. It's not worth it unless you have general rules for how to use it.
@Færd No, not strictly, hence the emoticon. However it's an often proffered explanation as to why inside jokes aren't gotten. Here's some example text.