Pros
Robert Half corporate is a good place to get experience working with different technologies. IT staff are generally pleasant people to work with and there is a real camaraderie that exists among the teams at the staff level.
Cons
The organization pays lip service to valuing employees, but in reality they are a staffing organization and there is an undercurrent of attitude from management of 'if you don't like what's going on we've got 10 people waiting to replace you'. IT management turnover is incredible. IT mid-level managers average about 1 yr before they're forced out or leave because they can't deal with the impossible, no-win situations they're constantly forced into. Don't plan on being able to sustain a long-term career or retire from this organization unless you are Menlo Park leadership or one of the few top-level sales people in the field.