1. Providers
1.1. Peer-to-Peer
1.1.1. Conversation
1.1.2. Collaboration
1.1.3. Consults
1.1.4. Telemedicine
1.1.5. Continuing education
1.2. Patients
1.2.1. Queries
1.2.2. Lab results
1.2.3. Behavior mod
1.2.4. Support
1.2.5. Appointment reminders
1.2.6. Education
1.2.7. Health promotion
1.2.8. Monitoring
1.2.9. Surgical& ER followup
1.3. Industry
1.3.1. Resource discovery
1.3.2. Resource access
2. Research
2.1. Peer-to-Peer
2.1.1. Conversation
2.1.2. Sharing articles
2.1.3. Collaborator discovery
2.1.4. Collaboration
2.1.4.1. Remote
2.1.4.2. Local
2.1.5. Data sharing
2.2. Disseminating Results
2.2.1. Bench-to-Bedside
2.2.2. News media
2.2.3. Public
2.3. Recruitment of subjects
2.4. Data collection / data source
2.4.1. Epidemiology/tracking
2.4.2. Environmental scanning
2.4.3. Patient monitoring
3. Hospital Admin
3.1. Marketing
3.2. Recruitment
3.3. Crowdsourcing
3.4. Internal staff communications
3.5. Collaboration
3.6. Sharing
4. Government
4.1. Communication
4.2. Collaboration
4.3. Open Government
4.4. Sharing
4.4.1. Policies
4.4.2. Guidelines
4.4.3. Standards
4.4.4. Resources
4.4.5. Services
4.5. Health promotion
4.6. Crowdsourcing
5. Public
5.1. Peer-to-Peer
5.1.1. General health
5.1.2. Wellness
5.1.2.1. Dieting
5.1.2.2. Fitness
5.1.2.3. Nutrition
5.1.2.4. Prevention
5.1.2.5. Lifestyle
5.1.2.6. Smoking Cessation
5.1.2.7. Health promotion
5.1.3. First aid
5.1.4. Complementary & alternative
5.1.4.1. Scam warnings
5.1.4.2. Quackery concerns
5.1.4.3. Evidence-based
5.1.4.4. Herbs
5.1.5. Parenting
5.1.6. Elder care
5.1.7. Collaboration
5.1.8. Sharing
5.2. Patients
5.2.1. Support
5.2.2. Information
5.2.3. Research
5.2.4. Data sharing
5.2.4.1. With family/friends
5.2.4.2. With healthcare team
5.2.4.2.1. Participatory medicine
5.2.4.2.2. Collaborative decision making
5.2.4.2.3. Monitoring
5.2.4.2.4. Q&A
5.2.5. Collaboration
5.2.6. Status updates
5.3. Patient Advocates
5.3.1. Public health
5.3.1.1. Outreach
5.3.2. Caregivers
5.3.2.1. Collaboration
5.3.2.1.1. Strategies
5.3.2.2. Sharing
5.3.2.2.1. Death & Dying
5.3.2.2.2. Lifestyle
5.3.2.2.3. Support
5.3.2.3. Data sharing
5.3.2.3.1. With family/friends
5.3.2.3.2. With healthcare team
5.4. Formal Patient Online Networks
5.5. Informal patient communities within mainstream social media
6. Industry
6.1. Peer-to-Peer
6.1.1. Best practices
6.1.2. Conversation
6.1.3. Opportunity sharing
6.1.4. Collaboration
6.2. Clinicians
6.2.1. Inform
6.2.2. Collaborate
6.2.3. Support
6.3. Public
6.3.1. Collaborate
6.3.2. Crowdsourcing
6.3.3. Educate
6.3.4. Inform
6.3.5. Outreach
6.3.6. Support