I have worked with them since 2007. PCT is their affiliate side of their business. I started working with them through their Freebie Sites. They own Git-R-Free and ZeroPriceTags.
I have always been paid on time both through the freebies sites and PCT.
They offer a ton of offers than can be incentivized. In fact, no one offers more in my experience. I would guess they have over 100 offers that you can flat out pay people to complete, or at a minimum, you can "reward" people for doing. Their site tells you which offers can be incentivized.
Having said that, they are very good at detecting fraud on offers, etc.
So while you can pay people to complete offers, you can't do fake sign ups etc (like hire folks overseas and use virtual cards, etc) It has to be real people, with real cc's trying offers.
I have only sent legit traffic to them, and have been happy with results.