- Academia.edu – Academia is the internationally recognized establishment of professional scholars and students, usually centered around colleges and universities, who are engaged in higher education and research.
- LinkedIn – looks similar to other social networking sites, but is more carrier-oriented, you can put any publications there, and link them to either your homepage or arXiv or whatever, or don't link them at all, that's up to you.
- Google Scholar Citations- Google Scholar Citations provide a simple way for authors to keep track of citations to their articles. You can check who is citing your publications, graph citations over time, and compute several citation metrics. You can also make your profile public, so that it may appear in Google Scholar results when people search for your name.
- Mendeley is a desktop and web program for managing and sharing research papers,[1] discovering research data and collaborating online. It combines Mendeley Desktop, a PDF and reference management application (available for Windows, OS X and Linux) with Mendeley Web, an online social network for researchers
- ResearchGate – I have no true experience with RG since it's not so popular amongst my colleagues. But it seems to me that you can both put the whole article there, or just put the reference there with the option that people can ask you to send them the paper. This is very nice since you need not to break any journal's policies to make it work.
If you are looking for a place to get distribution and recognition for your research, Academia.edu is the place for you. If you are looking for a place to organize papers that you have stored on your hard drive, Mendeley is the place for you.
What is their benefit?
Academic social media and impact?
Difference in audience
Profile, network, promote
https://www.google.com/trends/explore#q=academia.edu%2C%20Linkedln%2C%20ResearchGate&cmpt=q&tz=
http://techcrunch.com/2009/05/14/professional-network-researchgate-is-the-linkedin-for-scientists/
http://connectedleidenresearcher.nl/articles/academic-social-media

















