Pros
It is definitely a job. The hiring process is fast, easy, and you get paid. If you can get past how difficult they are to work with, they tend to place people with good companies.
Cons
No local contacts for most contracts, which means that you have to email someone and it takes them forever to get back to you. They aren't very good at staying on top of pay, and they messed up my pay check, and several other employees when I was working there. They gave me a lot of inaccurate information about the job that I interviewed for. The recruiter that I worked with talked down to me every time I had to talk to him. They also don't have benefits until after 90 days.