There are revealed the basic strategies and tactics of rumour realization in foreign mass media and considered the pragmatic aspect of their influence on the addressee. There is proved that the absence of the information required is filled with doubtful messages by the means of some strategies and verbal tactics, ways and language markers aimed at changes in addressee’s mind. There is stated that the pragmatic aspect is revealed in the influence on people’s minds and behaviours, as rumours change public opininon, may cause antisocial behavior of a particular part of the population, provoke the destruction of social relations between people and lead to mass riots.