See bellow selected open research challenges that are currently being investigated by the research community. These are only few of the dozens of research challenges that the research community faces towards the quest for a ubiquitous, intuitive and secure social web.
Avoiding fragmentation of the social graph through open cross-platform interactions
A major hindrance to exploitation of social network data is the fragmentation of the population of social network users into numerous proprietary and closed social networks. This issue is compounded by the fact that each new game or media application tends to build its own social network around it rather than building upon the rich data available about existing social relationships. Also applications are oft en restricted to execute within the confines of specific social network platform. A major research challenge, therefore, that would benefi t the exploitation of social network graphs for future media networking, is in finding solutions to open up social network platforms to allow cross-platform information exchange and usage. Of course, reliable mechanisms to preserve privacy are an essential prerequisite.
Communities discovery and analysis in large scale online and offline social networks
As social networks will continue to evolve, discovering communities and constructing specific social graphs from large scale social networks will continue to be a dynamic research challenge .
Security by means of Social Networks Analysis
Th e information extracted from Social Networks proved to be a useful tool towards security. One example of an application related to security is the Analysis of terrorism , as for instance, the Analysis of the 9-11 Terrorist Network  . This study was done by gathering public information from major newspapers on the WWW and analysed it be means of Social networks. A major research challenge on social network analysis is also cyber surveillance for unlawful activities for critical infrastructure protection .
Social and Ethical Issues in a Networked World
As in every small or large community, online social communities face also critical social and ethical issues that need special care and delicate handling. Sharing of personal information, protection of child exploitation and many other problems have to be studied and answered appropriately .
Searching blogs, tweets, and other social media
Searching in blogs, tweets and other social media is still an open issue since posts are very small in size but frequent, with little contextual information and sometimes extremely temporal . Moreover, diff erent users have diff erent needs when it comes to the consumption of social media. Real time search has to balance between quality, authority, relevance and timeliness of the content.
Human-powered community question answering and expert finding.
Human powered (aka crowdsourcing) systems gave promising solutions to problems that were unsolved for years. Th e research community should continue working on leveraging human intelligence to solve critical problems and answer questions that otherwise would be impossible to answer automatically . Social networks contain immense knowledge through their users. However, it is not trivial to fi nd the one that has the knowledge and is also available to share it .
Traffic prediction for dimensioning media applications
Investigation of how to exploit knowledge of social network relationships to predict how media consumption may be correlated between groups of users. Th is information can be used to dimension media servers and network resources to avoid congestion and improve QoE.
Social, mobile, pervasive content sharing and live media distribution
Since users act as prosumers, content sharing and distribution needs will continue to increase. Mobile phones, digital cameras and other pervasive devices produce huge amounts of data that users want to distribute if possible in real time  .
Spam, opinions and adversarial interactions in social media
Spam detection and advertisement detection are research challenges that need extra attention from the research community. Since users and data production increase, spam (irrelevant in-formation) and advertisements will continue growing .
In addition, the importance of social networks to infl uence the opinions of the users should be protected with the adequate mechanism to avoid biased and fake opinions due to the relevance to the businesses.
Personalisation for social interaction
In order to improve social interaction and enhance social inclusion, personalization engines that locate peers with possibly common likes, dislikes or developing trends should be engineered. Towards more effi cient search engines that will be able to serve the users only with relevant content, personalisation algorithms have to be studied in a greater extent.
Dynamics and evolution patterns of social networks, trend prediction
Research in dynamics and trends in social networks will provide more valuable tools for information extraction that may be used for content management and delivery, epidemic predictions or recommender systems.
Information diff usion in Social Networks
Research in Information diff usion is more than ever needed since the domination of social networks as a communication platform .
Use of Social Networks for business and marketing
Social networking introduced novel collaboration paradigms between network users and serious study is conducted on the use of such platforms for internal business purposes . However, one of most prominent research challenges is how to use social networking for external communications, customer support and of course targeted marketing .
Social gaming and social television
Research is needed on better mass feedback mechanisms for both social gaming and social television. For social gaming as “serious game” is a research challenge.
Immersive Social Networks
Immersive social networks will be the future web platforms for social interaction, communication and infotainment. Immersion will provide an intuitive environment and enhance user experience in order to let the users socialize and interact in a more natural way.
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