Pros
Very easy to get hired. No real interview process...I signed up online, was called that same day and offered a project, and simply had to submit documents to verify my qualifications. Started work the next day. The training was very thorough and everyone I've encountered has been friendly and professional. The work is generally easy and someone is always available to answer questions or provide assistance.
Cons
Scorers are temporary workers and as such there is no job security. When testing season is over, then there's no more work. You are assigned to one project at a time, so there's no guarantee you'll be working continuously--just like any other temp job. The amount paid per item is less than the advertised pay per hour if you work at the pace they expect. Work is monotonous as it is the same thing all day long.