Despite the plethora of career-related websites, I believe that creating these could enable someone to do well by doing good:
APlayer.com.
Many sites attempt to match employee with employer but none use the most potent predictor of how well an employee will do on the job: simulation.
APlayer.com would make it easy for an employer to upload a simulation of a task(s) the employee must do well on that job.
Candidates whose resume and application match the job description would be invited to participate in that online simulation.
High-scoring candidates would be invited to in-person interviews.
InterviewFinder.com.
Nearly every job seeker hates looking for a job: networking, cold-calling prospective employers, creating resumes, filling out applications, getting letters of recommendation, etc.
Career counselors looking for more clients would, on interviewfinder.com, offer to handle the entire job search except for the interview, of course.