Elsevier pre-announces Scirus Topic Pages

Topic Pages are an innovative way for scientists to communicate in an informal and flexible way. Each Topic Page will provide researchers with summaries of a specific topic written by an authority in the particular subject area, with direct links to relevant scholarly papers, abstracts and citations, supplemented with relevant websites and other online resources from Scirus. In the initial phase, authors for Topic Pages are invited through an editorial process facilitated through Elsevier publishing staff. As more pages are developed, additional authoring options will be considered.

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At the official Topic Page launch later this year, the functionality of the Topic Pages will allow scientists and researchers to alter the content and provide feedback, allowing each topic to be shaped by the suggestions made by the research community.

from Elsevier PR - Elsevier Announces Partnership with FAST to Deliver Topic Pages for Scientific Communication on the Web

This is presumably the social network that was indicated in Joris van Rossum's Science-specific Search - Scirus and beyond talk at IATUL 2007.

UPDATE 2007-07-20:

http://topics.scirus.com/