These are informal social/research media tools that could be useful to discover research articles in your field of research.
H-Net. Humanities & Social Sciences Online. An international consortium of scholars and teachers, H-Net creates and coordinates Internet networks with the common objective of advancing teaching and research in the arts, humanities, and social sciences.
The Open Science Research Network
The network of scientists will facilitate scholarly discovery. Institutions will participate in the network by installing VIVO, or by providing semantic web-compliant data to the network