Web 2.0 technologies can be defined as Web-based services or products that allow individuals to share digital resources with one another, to engage each other in conversation and to collaborate with one another so that they can collectively construct knowledge. This article discusses the potential uses of Web 2.0 technologies, for example RSS feeds, social bookmarking applications, blogs, podcasts, wikis and immersive virtual environments, to facilitate students' learning of science, especially in the 'long tail' region of science education outside the standard science curriculum.