Web 2.0 tools: a series of short introductions

There are vast numbers of Web 2.0 tools, applications, platforms, and services available. Many of them are free or low-cost and easy-to-use. This section provides a series of short introductory guides to a selection of commonly used Web 2.0 tools: blogging; micro-blogging and Twitter; wikis; online social networking; RSS feeds; tagging; social bookmarking; glossary of Web 2.0 terms. Each guide provides a brief description of the tool and how it can be used for development purposes, along with links to further information and where applications can be downloaded online