Pros
It is a great culture, with lots of fun activities. Your fellow colleagues can become close, and support each other. They have communities by functional area (e.g., Business Analysis area, t=Testing community, etc.). HR was supportive when I was first there. The projects were interesting. Benefits were great for such a small company (Approx. 300 employees). Good place to learn about web services and solutions.
Cons
If your manager didn't like you, they would do things behind your back to get you out of their project. If there was no other project, you were out of a job. Training was minimal. HR was always on the side of management, and never considered the employee staff as an asset. If you tried to move to another project within the company, you would need to re-prove yourself like a new employee.