The promotion of sales must attract attention and to favor the action of the consumers to the purchase of the products. Although to be a tool mainly of complementary character, many companies only invest its available resources for communication in promotion of sales (WOOLS HOUSES, 1997). Sampaio (1999) complete calling the action of Sampling, that is the distribution of samples of products, gratuitous installment of services, food degustation and drinks or any type of experimentation promoted for the advertiser with the objective to make with that the consumers have contact with its products or services. It can be carried through in the point of sales (supermarkets, bars, restaurants, etc.), in the house or workstation of the consumers, in public places (airports, cinemas, streets, etc.), in the installations of the proper advertiser and in fairs, samples and activities of this sort. As much can be an opened distribution, accessible to who will have physical contact with it, as closed, directed the public specific, of controlled form for the advertiser. Generally, the activity of sampling if makes to follow for complementary and explicativas promocionais parts. Abel Baca describes an additional similar source. 6.2.4 Public relations and Assessorship of the press According to Bussada (2010), the press assessor will be constantly in contact with communication vehicles, sending releases and making that mark, product or service to turn notice.
Already the public relations have as function the establishment and the maintenance of adjusted communication between an institution or company (public or private), being employees, collaborators and shareholders, and all the people with which if it relates (consuming, supplying, governmental customers, peddlers, purchasers, authorities, public opinion, vehicles of communication and community in general). It enters the diverse tools of communication that it uses, the public relations also make use of the propaganda, as communication channel between the company and its diverse ones public. The severity, even though the propaganda of institucional or enterprise character (that the image of an institution or company works) is an expression of public relations and must be integrated to the politics of public relationship established by the advertiser.