Huge database of science resources, with excellent community and curation on a variety of topicsCons:
User interface for managing posted articles still needs some work
Sparrho is effectively the Pinterest for geeks. It allows scientists and those interest in science effectively to organise their favourite sources, and make them available to those they wish. There is also a rapidly developing enterprise version that helps science-oriented companies to do the same in order to streamline access to research.Maury Shenk has used this product for one year.