Income sources for your hosting business
AdBrite is a great to have in addition to AdSense. Adbrite is best used as an alternative url in case AdSense can't be displayed.
Works well for traffic from all over the world.
PayPal is useful for using upgrades for your services or other products that you sell.
Most people trust PayPal and like that PayPal supports the major credit cards.
Azoogle is the largest CPA network which pays per action or lead. They have the highest payouts and are great for sites to earn extra income.