More info from
Sex Goes Mobile re their mobile live cam chat services:
"Live webcam services have always been the biggest revenue generator in the internet, and as you can imagine they are in the mobile internet as well. Already today mobile live webcam services are accounting for about 60% of total revenues. Since customers have to pay per minute to use these services, webcams are an excellent revenue generator.......The interactive nature of of this service, ensures that users spend a lot of time online and come back for more."