The document discusses the evolution of technology resources for language teaching from analog to digital to social web-based resources. It provides examples of different types of free web-based teaching materials and tools available for language teachers including dictionaries, authentic texts, images, videos, podcasts, forums, wikis, blogs, and social networking sites. It also discusses how these new social tools and computer-mediated communication options can provide opportunities for authentic language use, global collaboration, and ubiquitous learning.