They get about $0.45 per call connection completed, by posing their lines as pay phones, which you as the toll-free line owner has to pay. This is the "dial around compensation fee". It is wire fraud for you set up a false pay phone, but very few people have been caught and indicted, much less convicted. There are a lot of toll-free numbers, so they war dial every line through their virtual phone bank multiple times per day so it is just enough to be super annoying but not enough to put them on the radar. You can easily bleed out $5-10 on many days, and I expect this to not only become consistent, but increase rapidly as others figure out how to implement this scam.
