Research is Cool is a website designed specifically for postgraduate students and postdoctoral fellows. You can find the site at:
The site combines academic research recruitment services with social networking features that allow you to make yourself known to researchers with similar research interests across the world, create research discussion groups and communicate with other researchers across disciplinary and geographical boundaries.
You can alos use the site to find research jobs and postgraduate courses & studentships, as well as to communicate with other researchers with similar research interests from across the globe.
Research is Cool was founded by a PhD student at the University of Edinburgh.