ENThe analysis presented in this chapter is focused on the intragroup communication of the two largest Russian-speaking online communities in Lithuania through their Facebook activities. Different intentional varieties of the phatic (solidarizing and dissonant) and informative (informing and quasi-informing) types of communication are revealed; the principles of their manifestation and interaction at the level of typical scenarios realized by each community through various models of speech behavior are described. The analysis of typical scenarios of intragroup communication unveiled the mechanisms of self-regulation of intragroup communication; this revealed a correlation between the coherence of group members in the process of communicative sanitation of unacceptable content and the effective constructing of the intragroup core that plays a key role in the formation of collective identity. Keywords: Russian-speaking online communities in Lithuania; intragroup self-regulation; methods of communicative sanitation; selective dissociation; multiple identity; collective identity. [From the publication]