This was the first agency I tried after graduating from undergrad and was one of the worst I encountered. I gave them a try after reading a full page ad in the Boston Metro claiming that they specialized in job placement for recent college graduates. The service was unprofessional as the agent that I interviewed me seemed to be bothered by my presence and that of the other people with scheduled appointments.
The woman told me that she could not help me since I only had a Bachelor's degree. She said that all she could find for me were night jobs at Home Depot or Target and to obtain anything better I should first get at least a Master's.
I wish I was making this up or exaggerating but I'm not. With so many options in the Boston area (at least four within a five minute walk from this place) there is no use going to this agency.
Pros: um, location?
Cons: Unprofessional service