Are you aware?

The U.S. department of Health and Human Services' "Look Beneath the Surface" campaign is an admirable effort to educate and inform on the issue of Human Trafficking. I have three of their PSA posters in my office, in fact. My client (a formerly trafficked person) could not read English, but looked at the young girl, depicted sitting with her handcuffed hands by her face, almost in a prayer position, her dark hair spilling across her shoulders and remarked, "She looks a lot like me."

Many NGOs, government entities, University and religious groups have done awareness and outreach efforts to educate communities about human trafficking. Are these efforts effective? How could or should we measure the effectiveness of outreach campaigns of this sort?