Social networks have become one of the most intensive environments for everyday written communication in Russian. Unlike traditional print media, social platforms combine speed, conversational interactivity, algorithmic visibility, and multimodal expression, thereby reshaping how users select words, build sentences, signal stance, and negotiate norms. This article examines the influence of social networks on the Russian language as a dynamic interaction among technological affordances, communicative practices, and socio-cultural values. Using a mixed design that integrates (a) discourse-linguistic observation of social media genres, (b) comparative analysis of forms typical for networked communication versus standard written Russian, and (c) interpretation within established frameworks of computer-mediated communication and sociolinguistics, the study synthesizes key tendencies of contemporary Russian online speech. The results indicate that social networks stimulate accelerated lexical innovation (slang, expressive neologisms, borrowings, and semantic shifts), normalize a hybrid “written-oral” style marked by compressed syntax and dialogic structures, intensify pragmatic markers of evaluation and identity, and expand punctuation and графическое оформление into a system of affective and interpersonal cues. At the same time, social networks also generate counter-trends: heightened metalinguistic reflection, new prescriptive micro-norms inside communities, and the diffusion of editorial practices through influencer culture and platform moderation. The discussion highlights that the influence of social networks is not a linear “degradation” of Russian but a reconfiguration of registers, where variability, expressive economy, and community norms coexist with standard language ideologies. The paper concludes that the most consequential change is not the emergence of isolated slang items but the stabilization of new communicative conventions that redefine the boundaries between colloquial and written Russian.