This paper reports on a large-scale study carried out in four settings that investigates the potential of the Web as a medium of language instruction, both to complement face-to-face teaching and as a stand-alone course. Data was collected by questionnaires and observational procedures to ascertain student perceptions of the usefulness of Web-based learning, their views on its advantages and disadvantages, their personal comfort and enjoyment when working with the Web, their preferred mode of delivery, their evaluation of the quality of resources used, and their learning strategies and study preference. Results showed that students were on the whole positively inclined to working with the Web and found it useful, with the majority preferring to use the Web as an add-on to face-to-face teaching. Reported advantages fell into the broad categories of time flexibility, reinforced learning, privacy and wealth of information; disadvantages into distraction, absence of teacher and personal interaction and lack of speaking practice. Significant differences for age and gender were found relating to clarity of objectives, number of hours worked, mode of delivery, perception of comfort and appreciation of graphics. Very few significant findings relating to strategy strength emerged.