The document discusses various social bookmarking tools and their key features. It covers general tools like delicious and diigo which allow bookmarking anything on the web. Specialist tools are also examined, including bibliographic tools like EndNoteWeb and RefWorks as well as Citeulike and Mendeley which are aimed at academic research. The document encourages the reader to try different tools and consider factors like cost, features, and network effects when deciding which social bookmarking tool suits their needs.