Besides being a great research, communication, and professional development tool for teachers, there are four major ways IMHO by which the internet can enhance the teaching of languages. The examples of each, given below, are not meant to be exhaustive, but are meant to suggest a range of possibilities.
Teachers save time and money using on-line materials.
The internet radio and TV are also great for sharpening, maintaining, and updating listening comprehension skills. To access these, you'll need RealPlayer . Much information categorized by topic and by country. Go to the Yahoo site. Scroll to the bottom of the page.