"Social networking" is defined by Merriam-Webster as, "
SERMO- A global social networking community exclusively for doctors, SERMO bills itself as a "virtual doctors' lounge" and offers a place for completely anonymous discussions about the business and practice of medicine, as well as medical crowdsourcing.
Doximity- "a professional networking tool exclusively for Physicians and health care professionals."
Figure1- " network for healthcare professionals to share and discuss images and other medical content. It is safe and deeply conscious of patient privacy, but simple and easy to use. "
SharePractice- "the collaborative medical reference used by doctors to rate and review the effectiveness of drugs, herbs and supplements. By crowdsourcing the real time consensus of the global medical community, SharePractice enables doctors to instantly get thousands of qualified second opinions from trusted colleagues on any diagnosis."
A more exhaustive list of social networking sites specifically for clinicians is available here.
VIVO- "VIVO enables the discovery of researchers across institutions. Participants in the network include institutions with local installations of VIVO or those with research discovery and profiling applications that can provide semantic web!-compliant data. The information accessible through VIVO's search and browse capability will reside and be controlled locally, within institutional VIVOs or other semantic web-compliant applications."
ResearchGate- "ResearchGate was built by scientists, for scientists. It started when two researchers discovered first-hand that collaborating with a friend or colleague on the other side of the world was no easy task. Founded in 2008 by physicians Dr. Ijad Madisch and Dr. Sören Hofmayer, and computer scientist Horst Fickenscher, ResearchGate today has more than 7 million members. We strive to help them make progress happen faster."
ORCID- "ORCID provides a persistent digital identifier that distinguishes you from every other researcher and, through integration in key research workflows such as manuscript and grant submission, supports automated linkages between you and your professional activities ensuring that your work is recognized."
LabRoots- "an online social network service, based in Yorba Linda, California, aimed at improving scientific collaboration for tech innovators, engineers, and scientists."