Computer-based technology that facilitates the sharing of ideas, thoughts and information throught the building of virtual networks and communities.
Different types of social media services cater to different needs and accomodate various types of content.
Some have overlap features, others are more specific in their use and the kind of services offered.
The amount of information available
the degree to which data can be trusted
Various data sources collected
how fast data is generated and collected
If we take any two random people in the world, the hops between the two will be 6.