When and where should I use <nowiki>!!FUZZY!!</nowiki> in translation?

No, usually translations aren't supposed to have "!!FUZZY!!" in them. It is added automatically when the original string was changed and the translation must be updated. After you update the translation, remove the "!!FUZZY!!" string.

Amir E. Aharoni (talk)04:54, 23 September 2012