Some people prefer to keep their finances to themselves, but if the two couples are friends and are asking for advice regarding finances then it is not poor etiquette to discuss it. However, if one person asked another how much money they have or what is the salary they make this is poor etiquette.
The way you are expected to act by others is referred to as etiquette or manners.
Proper language , showing respect for others, showing classes ways and manners around others.
Correct use of e-mail etiquette includes such courtesies as asking a message sender for permission before forwarding the sender's message to others
Examples: -"Basic etiquette is needed when dining at a restaurant." -"She had no etiquette when at the dinner table; she did not put her napkin in her lap, nor held her fork correctly, and she ate like a pig with her mouth open. -"Her etiquette at a party was not so great, because she interrupted others' conversations and such."
Etiquette concerns the comfort, care, and well being of others, and others only. It is entirely selfless and absolutely destroyed by selfishness. So etiquette does not see this shower already given. Etiquette does not care what you've done, but what you are about to do. Etiquette says if you can give her a shower, do so. If not, find someone else to help or let her know gently. It may seem like a lot, but this is love, caring, kindness, generosity, and all those other virtues that without with, etiquette would not exist.
That they have "chivalry", or etiquette in everyday life to others (as in social interactions).
Be considerate of the feelings of others.
The reference point.
They want to compare themselves to others
Etiquette 101 - 2004 Wedding Etiquette was released on: USA: 17 August 2008
Etiquette 101 - 2004 Etiquette for Everyone was released on: USA: 19 November 2005
Etiquette 101 - 2004 Dining Etiquette was released on: USA: 16 December 2006