For decades foreign and second language teachers have taken advantage of the technology development and ensuing possibilities to use e-learning facilities for language training. Since the 1980s, the use of computer assisted language learning (CALL), Internet, web 2.0, and various kinds of e-learning technology has been developed and researched comprehensively to extend predominantly communicative language teaching approaches focusing on training language skills. While international, in the 2000s the use of web 2.0 technologies in particular has been introduced for developing reading and writing skills in Denmark with special attention towards the development of web-based materials for Danish pronunciation. This paper sets out to introduce differences between the international and Danish use of web-based language learning and teaching. Finally, dilemmas and challenges for the use of CALL, IT, and web 2.0 in L2 teaching and learning and in particular the teachers' key role in e-learning will be addressed.