While digging through [mediawiki] I noticed some questions which are about using some specific wiki (such as Does the German Wiktionary have a way to request words to be added? which I don't think should be tagged mediawiki because it has nothing to do with the software) whilst most questions are more about configuring the software itself (like MediaWiki deny article edit right to all users except admin and article owner). This configuration issues clearly seem off-topic for me. Some seem borderline cases for me such as How can I float the table of contents to the right with MediaWiki (if it should be on-topic it clearly deserves the mediawiki tag because it is a general question how to use the web interface of this software and may even help non-administrators in using it).
How should we deal with these questions?