In the experience of disease, an identity or the pre-disposition, for instance, a trend lines class action may provide reference, work as a clearing-home for lives, & help as a public relations voice for sufferers, other members, & their families. Compare Mensa International and gay pride, for example.

In the experience of alleged ex-cult members or private addictions, on the other hand, the trend lines class action might veer additional towards helping people required to overcome or even move "beyond" their condition/experience. Therein category a single could place Alcoholics Anonymous and other twelve-step programmes.

Overtly or even otherwise, such groups provide social networks & extended serve for their members. Compare group dynamics.

2 types of trend lines groups come: self-serve trend lines groups, which are then then begin by their members; & professionally start trend lines groups, which are rerun by agents.

Formal trend lines groups can pop up as a modern phenomenon, however it supplement traditional fraternal organizations such as Freemasonry in some respects, & might build in certain supportive functions (erst) carried call at (extended) families.

A novel and movie Fight Club present a wry analysis of trend lines groups & their work.