The rise of English as an international language (EIL) has brought to light the needs of those who speak it as an additional language. This has in turn radically reshaped the role of culture in the EIL classroom, which may now aim at developing critical transcultural awareness. By reporting on a joint initiative undertaken by three schools in two countries, the "EIL in Poland and Spain" blog project, this article explores how a transcultural curricular approach could be implemented in the EIL classroom with particular reference to computer-mediated communication (CMC) that might lead to the creation of virtual "third spaces". Results show that, upon task-induced reflection, participants (1) overwhelmingly acknowledge the power of the othering discourses which are central to national identity; (2) bond together through (2.1) widespread usage of the same register in English and CMC-standard non-verbal semiotic codes and (2.2) similar subcultural (yet transnational) affiliations; and (3) may be seen to develop some critical awareness of their place in the world beyond their respective national borders. Finally, the pedagogical implications of a tool through which youth appears as a meaningful cross-cultural experience, bringing both Polish and Spanish participants together as critical thinkers through EIL, are discussed. (Contains 1 table and 7 notes.)