Academic social networks

1. Worldwidescience.org - http://worldwidescience.org/
2. Citeseerx.ist.psu.edu - http://citeseerx.ist.psu.edu/
3. Academia.edu - http://www.academia.edu
4. LinkedIn - http://www.linkedin.com/
5. ResearchGate - http://www.researchgate.net/
6. iAMscientist - http://www.iamscientist.com/
7. Epernicus - http://www.epernicus.com
8. Nature Network - http://network.nature.com/
9. Scholarz.net - http://www.scholarz.net/
10. Mendeley.com - http://www.mendeley.com/
11. Connotea.org - http://www.connotea.org/
12. Citeulike.org - http://www.citeulike.org/
13. Wok.mimas.ac.uk - http://wok.mimas.ac.uk/