Keyphrases
- online communities
- online social
- social awareness
- multiple users
- user communities
- virtual communities
- photo sharing
- online learning
- information sharing
- social networking sites
- share information
- community members
- knowledge sharing
- user interaction
- internet users
- collaborative web search
- social networks
- online video
- social network sites
- user interface
- end users
- social media
- digital libraries
- share knowledge
- recommender systems
- real time
- social influence
- website
- social communities
- online learning communities
- online services
- sharing information
- user profiles
- file sharing
- social networking
- link structure
- social web