The web connects like–minded people on a global scale. It widens communication possibilities for spreading ideas by overcoming socio– economical restrictions inherent to old media. Thus, Internet is often understood as a new public sphere, which helps to advance the ideals of democracy. On the other hand, its role in encouraging specific niche–communities — often accompanied by the radicalization and polarization of identification — cannot be ignored. This means that online communication allows the development of new kinds of communities, which differ from previous forms of power (publicly institutionalized). These communities are located in the gray area between the private and the public sphere. The article explains the formation of this kind of community in relation to conspiracy theories. The specifics of communication in these communities are explicated through relying on the concepts of auto–communication and anti–culture (from cultural semiotics) and with reference to Roman Jakobson´s of dominant and phatic language function.