2054.2 Assessment
Research Question (Clear, unambiguous) "[W]hether one’s social media behavior will affect employer to make their decision for recruiting their work teams."  As stated, this probably does not make sense as a research question, because it concerns something obviously true.  If employers learn seriously negative information about job applicants from social media (or anywhere), this will certainly reduce their interest in hiring those applicants.  So, what is a reasonable research question in this area?
Relevant Literature The articles mentioned are a reasonable start.  
Causal Interpretations (clear, all parts defined, mechanisms, controls, plausible) The causal interpretation offered (really just one, as the two mentioned are simply reversals of each other) are rather vague.  And largely self explanatory as stated.  Essentially, by definition "negative" media behavior could only detract from employability unless "negative" is defined in a way that an employer could interpret as a positive virtue.  This might occur if one is hiring for a criminal enterprise, for example, but generally seems implausible.
Data (variables, sample, comparison) The data statements provide no suggestion how the data could possible allow one to study the issue in question.  It seems unlikely.
Research Value The stated research benefit seems unlikely.  It seems to assume that there are many people who make what they recognize as negative impressions of themselves on social media, who do not realize this could have a future impact on their employment, and who would recognize this previously hidden possibility and change their behavior if they only had exposure to research giving evidence for this effect.  Is this plausible?
Overall The proposed project seems both conceptually and practically deficient.