Int. J. Environ. Res. Public Health 2009, 6 2.1.4. List of health social networks 501 A list of current health social networks is presented in Table 1, organized into three categories: patient-focused general multi-condition websites, patient-focused cause-specific websites and physician-focused social networks. Most patient-focused health social networks offer the basic level of service, emotional support and information sharing, for a variety of medical conditions. About half also offer the second level of service, some sort of Q&A with physicians, and a few offer the third and fourth levels of service, quantitative self-tracking and clinical trials access. Table 1. List of health social networks (information current as of 12/23/08). Legend: ES&IS: emotional support and information sharing Q&A: physician Q&A QS: quantified self-tracking CT: clinical trials access N&I: networking and information Focus General: 16 conditions, ex: ALS, MS, HIV/AIDS Name and URL General health social networks PatientsLikeMe http://www.patientslikeme.com CureTogether General: 175 conditions, ex: endometriosis, migraine http://www.curetogether.com MedHelp General: tracking, physician Q&A http://www.medhelp.org Inspire General: over 1,000 health and wellness groups, http://www.inspire.com journaling DailyStrength General: 600+ conditions http://www.dailystrength.org OrganizedWisdom General: 60 conditions, referenced research citations http://www.organizedwisdom.co m WellSphere General: 50+ communities, ask an MD feature http://www.wellsphere.com MDJunction General: 750+ conditions, physician listings and http://www.mdjunction.com marketplace ehealth forum General: physician Q&A; 1.2M questions logged on http://ehealthforum.com the site HealthChapter General: 715 groups http://www.healthchapter.com Trusera General: 23 main topic areas http://www.trusera.com iMedix General: information, support and answer response http://www.imedix.com Wellescent General http://www.wellescent.com WeGoHealth General: answer response from health activists http://www.wegohealth.com Experience Project General: members, stories, discussions http://www.experienceproject.co m Peoplejam General http://www.peoplejam.com Cause-specific health social networks TuDiabetes, http://tudiabetes.com Diabetes; SugarStats offers self- ES&IS dLife, http://www.dlife.com tracking ES&IS SugarStats, http://www.sugarstats.com ES&IS, QS Prostate Cancer Info Link Prostate cancer ES&IS http://prostatecancerinfolink.ning.com Services ES&IS, QS, CT ES&IS, QS ES&IS, Q&A, QS ES&IS, CT ES&IS ES&IS ES&IS, Q&A ES&IS, Q&A ES&IS, Q&A ES&IS ES&IS ES&IS, Q&A ES&IS ES&IS, Q&A ES&IS ES&IS