Does anyone have personal experience with Robert Half Technology?

I applied to a few desktop support positions on Monster that were being promoted through Robert Half Technology. An hour later I received a call from a recruiter who wants to meet with me. After setting up a meeting time I decided to do some research on the group and discovered many negative comments on the agency. I was wondering if anyone here had some personal experience with this group whether I might be wasting my time by dealing with them.

Note: I’m not applying to work at this company, but through this company as a temp agency.

Are they as bad as people seem to claim?

Examples of claims:
Non-existent job opportunities
Forced to sign a no compete contract before holding an actual job