The paper focuses on the analysis of the lexical borrowings of English origin used in the Polish language of Internet message boards. First, general information is given about typical features of the language used in Internet texts, followed by the summary of various understandings of the term ‘borrowing’. The main part of the paper focuses on the description of the loans found in the texts taken from Internet message boards. Both the differences between individual users as well as between different topics of conversation (i.e. context) are taken into account. Finally, the findings of the present analysis are compared with those for the spoken spontaneous Polish (Zabawa 2006) and the Polish language of hip-hop songs (Bartłomiejczyk 2008).