I know that most of the tags are english by default but is there any of you using other languages in there programs ?

Would the tags benefits of a localization of some kind ?

So haystack is really about building a taxonomy which is essentially a "programmer API" sort of thing. In general English is the lingua franca for programming/technology domain. So we want all our tags to be in English.

But tags that store user facing text may be localized. We really only have one tag like that today, the dis tag. This would often have a localized value in English, French, German, Mandarin, etc. But that already works today.

The real gotcha is if and how to handle multiple localizations simultaneously. There is no design pattern for that today. One simple way might be to using a convention such as:

dis_en: "English display text"
dis_fr: "French display text"
dis_de: "German display text"

Another more complicated mechanism might be to create a customized tag value:

dis: {en:"English", fr:"French", ...}

Or it can be handled with overlays mapped by tag keys.