By the way - one of the tricks these companies use is that they get the suckers to give them the names of friends they can also contact.
For every name you give them, they drop the costs or add to the incentive. They then contact those people and say "your friends _____ bought this package and recommended that we contact you."
Or sometimes they promise to keep it quiet - but if you are wondering where they got your contact info - very often it is people who know you from someplace.
I am the editor, but I also speculate, ask questions and play devil's advocate. I reserve the right to change my mind.