If people want to do open-source as a way to get a job, they should be contributing.
But not every GitHub account gets job offers. If you're an acitve part of a community, then absolutely, it would be for their good and yours if they can help you get a job.
I like the look and feel, but it's not why I signed up. I appreciate the message of being open to opportunities all the time, so I decided to give it a try.
p.s. great job on the quiz on the front page.