Building the credibility of different businesses and organizations is currently a complex process, but a very effective tool in practice and hard competition. They are increasingly confronted with a challenging environment in which credibility is very perceived and strategically important. Not only business entities, but also public institutions, strive for good reputation. They care about it as politicians, athletes, universities, nonprofit artists, media, but also individuals who work in public or professional relationships. Credibility is understood not only as a complementary image, but also as a value preference, a significant market prestige, a socially important function that achieves greater success, recognition, moral credibility, appreciation of organizational effort or good service. Building and understanding the importance of the credibility of social subjects also becomes an expression of stability, integrity, or firm security.