<font color="blue"> Common "netiquette" </font>
Common - Of or relating to the community as a whole
etiquette - rules governing socially acceptable behavior
In most communities, newcomers learn what socially acceptable behavior is by observing how longer term citizens of that community behave. Most, but not all, newcomers are eventually assimilated into the community, some quickly, others take longer. The ones that can't, or wont, learn what socially acceptable behavior is, typically leave for communities that have behavior norms they are more compatible with. If they remain, they are typically ostracized/ignored. Jane Goodall did fascinating studies of gorilla communities where this was observed.
TBN, like any other community, has its own socially acceptable behavior. However, since we're a virtual community, we do not have physical or verbal behaviors. Rather, TBNs behavior norms have to do with how messages are formatted, appropriate thread topics, etc., which are easier to observe, than the sometimes subtle behaviors in a physical community so assimilation is usually, but not always, quicker.