Answer to Question 1
Most changes will involve removing pictures and/or statements involving irresponsible behavior (or what would appear irresponsible to a prospective employer). Pictures of drunken people at parties, provocative photos, statements about religion, race, sexual orientation, and even political preferences might be the things that one would want to consider removing before beginning a job search.
Answer to Question 2
Employment managers should consider a candidates intelligence, job skills, education, employment history, and soft skills (oral and written communication, how they interact with others, etc.). Employers could also take a look at the candidates posts on different social networking Web sites to know more about the candidates personality traits. Three examples of information that should disqualify a candidate for a job interview include criminal history (depending on the type of criminal activity and the type of job applied fori.e., if the candidate is applying for a position as an IT technician in a middle school and has a criminal record for child molestation, he should be disqualified), illegal activity (such as using illegal drugs), and revealing confidential information about a previous employer.
Three examples of online information that should increase a candidates chances of a job offer include clear demonstration of responsible behavior (and no indication of any irresponsible behavior), having a complete, professional profile on all social networking sites (Facebook, LinkedIn, Twitter, etc.), and a YouTube video demonstrating a skill that would be valuable in the workplace.