I think this is just more of a publicity stunt, NY always had these tip lines. I don't think most folks want to get involved knowing that their name may get leaked, "which happens with everything in NY" on Discovery, and have some guy "who could be bad or good" know who turned them in. They especially in poor neighboorhoods, tend to keep their mouths shut.
Plus I can already see someone being killed because someone thought they turned them in.