Those who devote their lives to being fans become very versatile people. They can plan, edit, and understand the operations in their self-organized support groups, doing all the publicity including "anti-tarnishing" tracking that is sometimes superior to what PR companies do in this field. Anti-tarnishing consists of mounting publicity campaigns aimed at countering anything negative that has been said about a star. Fandom has also created job titles, such as that of the "cannon sister", a fan who hauls professional photography equipment around with them, ready to make a dash to any place, such as an airport, where an idol has appeared or is about to appear.

A "station sister" is the manager of a fan support group in a particular city.

They have a deft touch in working on high-definition images of their idol, lovingly applying filters here and there that will show him or her in their best light and doing so at lightning speed. They rush to distribute support material at idol event venues and monitor the way the idol's fan page is operating across various online platforms. They also have a keen ear and eye for spotting any incoming negative traffic, produced by an idol's detractors, those who are regarded as not up to scratch in their loyalty or, at the other end of the scale, fans who might be regarded as stalkers.