Discussion of corruption is extremely difficult as it is a hidden phenomenon in our societies. Both parties in exchange of power for privileges want to keep their transaction secret. That makes it so difficult to establish how wide and deep corruption penetrated our economy and social life. Moreover, what for some is no more than ‘a friendly turn’ is for others ‘misbehaviour’. What in one place can be friendliness is unacceptable elsewhere. Normal behaviour at a particular hour of the day may be unacceptable at another hour.