Interesting questions !

http://www.businessinsider.sg/airbnb-interview-question-2014-6/#.Vznmxvl974Y

My greatest takeaway from watching Korean variety shows was this: a group of newbies and a group of (entertainment show) veterans were on set. The veterans shared that one of their trainings involved thinking of their own identity and amplifying it - so that people identify you with it. And people instantly think of you when they encounter it.
Then the veterans threw out random words, and the newbies had to go in a circle and respond with a word/phrase associated with the random words.

The audience then saw that the newbs whose responses stood out belonged to those with a running theme, and that the theme matched the speaker's image.

Made me realise that you need to choose an image when you meet others, be consistent about it, and it needs to match who you are. You cannot choose an image that doesn't suit your look/personality as 1 it will not stick 2 it will not sell.