About [[Osm:Diary entries.no such entry.body/nb]]
May be the (optional) full capitalization of "ID" is avoided here in OSM to avoid the confusion with "iD" (the core map editor on OSM website), whose name may also show as "ID" as a page title with the leading capital.
It's unfortunate that OSM chose the name "iD" for its map editor on the web, when the term "id" or "ID" also has many uses for something else in OSM (notably all object ID's: nodes, ways, relations, changesets, users, web sessions, pages/files on its wiki, bugsin its bugtracker...) and needlessly created that confusion, without really promoting the map editor with a distinct name (like Mapid, combining "Map" and "Rapid"). And for accessibility with aural contents, "id", "ID" or "iD" are not different at all in all languages (there's all spelled as two letters and no one will vocally spell the lettercase distinction).
Anyway "ID" or "id" are equivalent in English, but if this is an acronym or abbreviation for "identifier", the capitalization rules are not necessariuly allcaps in all languages. In Latin "id" (or "Id") is also an abbreviation of "idem" (not always followed by an abbreviation dot, but by a full stop), and it is also a common code for the Indonesian language, or for the Indonesian country.
OK, "Potlatch" was a poorname, but why no better name than "iD" was proposed to votes for the OSM map webeditor (could have been "osmed" or "wemap")
Capitalization rules in English are very confusive and often incoherent, they just add to ambiguities in a language that also intriduced many ampbiguities between verbs and nouns, allowing too many interpretations, And here it also adds difficutlies for full-text searches with significant results really related to the editor