Of course such guides are completely specific to the customs of one specific culture. In other words, this is more or less useless if you don't live in North Am

Of course such guides are completely specific to the customs of one specific culture. In other words, this is more or less useless if you don't live in North America. Okay, well, maybe not quite useless but one should certainly take the outlined recommendations with a big grain of salt if you live somewhere else.