A. Decoration on planes
There are several airlines in my country for example: Air Europa, Iberia, Spanair.
Airlines use different decoration on its planes. Normally, airlines write the name of the airline on its planes with a symbol.
We can see in a plane of Air Europa the name of the company written that is normally the web page where I can find information about this airline: AirEuropa.com and next we can see the symbol that stand for Air Europa (a e).
Planes of Iberia have the capital consonant B coloured in red and yellow that represents the colours of the country's flag. Inside of the letter there is the crown, next the web page of the airline is written: iberia.com.
Planes of Spanair have the name of the airline written and also have a symbol of colour blue and yellow.
I don't like this kind of decoration on planes because the only objective is giving more publicity about airlines. I think it could be more interesting giving publicity about other subjects, raising people awareness of important subjects like taking care of the nature and the health.