I wonder if they are using sites to sell YouTube views. There isn't any money to be made otherwise by simply watching videos, and Google picks up the ad revenue for the overlay ads.
Dawg is probably right. They may have found a way to hijack adverting and display their own ads, or they are selling views.
Remember that a legitimate registered company does not mean it it an honest company. It will be interesting to see what type of commissions you make with this.
"Democracy is two wolves and a lamb voting on what to have for lunch. Liberty is a well-armed lamb contesting the vote." -- Benjamin Franklin