These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Fan Community Nickname - According to Sulli's me2day update, it's "plus", but a lot of f(x) fans are unaware of this, so it's not commonly used. The fans are usually given the misnomer "Aff(x)tion" - it's the name of the fan forum, not the fanclub.
Some of the fans started calling themselves nameless or f(nameless).