I have worked for a few clients of Personnel Source. I had a good experience with my agent and the reception staff. They will respond to questions and return phone calls in a reasonable amount of time.
My agent reviewed my resume and gave me good feedback on it, as well as possible jobs she had that she thought might be a good fit for me. She consistently kept me updated on the results after she submitted my resume to the client for review.
The hiring process is pretty fast. The background check and required drug testing did not take a long time, either.
I had two different assignments during the time I was working for Personnel Source.
I liked the shorter commute for their Vancouver, WA, client as well as their north Portland, OR, client.
I would recommend their agency to others looking for temporary work or longer term opportunities.