I don't see an 'english' tag for this post. I think the language should go into a special tag like "langs": ["en"] and if multilingual something like langs: ["en", "es", "ru"]. The problem is, as it would be great for searching, unless both PeakD and Ecency start adding that to the posts, the software using this meta-data will not know the language of the posts. However, if we put "#Spanish" in everything written in Spanish, we will never be able to find posts about the Spanish language itself because the tag will be used in this other way.