The subject of the article is the occurrence of dialectal features in Internet nicknames. The analysis was carried out on the basis of about 2500 nicknames that contained dialectal features. The names were obtained within the years 2012–2015. In the analysis, linguistic areas were indicated in which we may notice the influence of local dialects on that layer of the Internet anthroponymy. The influence of local dialects is visible in the fact that the Internet users reach for traditional folk names as well as name models related to the folk manner of identifying a human being, e.g. Jagatka, Jantecek, Janielka od Genowefy, Cesiek z Tuchowa. Apart from references to folk anthroponymy, the Internet nicknames reflect the influence of local dialect lexis (e.g. gzub, graślok, fusyt), phonetics (janioł, Carownica, łokrutny łoptymista), inflection (Śpisok z Łapsóf, ciupaga łod tater) and word-formation, e.g. (rzemyszek, cwaniuk).

The article shows folk nicknames operating in geographically diverse rural communities (administratively belonging to the municipality Muszyna). As unofficial anthroponyms, existing only in the spoken form, they represent a living local language — dialect. Analysis of the collected material shows that all the most important features of the language characteristic of this part of Lesser Poland (Małopolska) dialect are performed in it. Folk nicknames, despite numerous hazards caused by civilization, are still an important factor supporting the local dialect — they operate rather vividly in the ana lysed microcommunity (almost every adult has his nickname), and are constantly being created and passed down from generation to generation.