Social media sites like stuffdot are often classified based on two factors; self-disclosure and

The answer to this question is "Media Richness".

Explanation:

Media Richness is a theory, that says Media has the power to convey the information that is needed in communication. This depends on whether uncertain times which type of data will be used, which is explained by the Mass Communication.  

Media Richness is the amount in which two social members make audio, visual and private interaction. It provides face to face communication that was released in 1987 which ranks this as the richest channel for mediated communication.

Pairs
A. work independently and be willing to learn new skills
self-motivation

B. have a strong commitment to the company and
deliver work as and when needed
Reliability

C. be passionate about work and motivate others
Positive attitude

D. value the time of your coworkers
Loyalty