SciTopics from Elsevier
SciTopics is designed to be a starting point for researchers to gain an introductory overview of a particular topic, while also identifying sources for a more in-depth analysis and coverage of that topic. Unlike other web services for the scientific community, SciTopics does not focus on one specific scientific discipline, but is open to researchers from all scientic angles.
It offers distilled, authoritative and up-to-date research summaries on a wide range of scientific topics.
Wiki-like knowledge-sharing service for the scientific community.