Ventajas
I wish I could have found out what the pros were.
Desventajas
I was "hired" at Math Works a few months ago. I interviewed twice with several people. The corporate recruiter praised my candidacy, called all of my references, ran a background check, gave me my pay rate, a verbal offer, and an idea of when I would start my first day. I found it odd that I hadn't heard from the recruiter in a week, so I emailed her. Nothing. I called her, left messages, and she ignored my calls. Two weeks went by... nothing. Three weeks... nothing. You get the point. I was given a verbal offer and then I never heard from the recruiter again. Very surprising for such a large and successful company, and extremely disappointing. I would never apply for a job there again and have told friends and family about my experience so that they can avoid going through the trouble as well.