The name says it all. Most of the web hosting companies do have an Affiliate Program. That is you sign up as an affiliate and you get commission for every new customer your refer to them.
A program that allows websites to sell a product on a commision basis..
A program set up by a "Sponsor" to allow affiliate webmasters to send traffic to the sponsor's website(s), then pay the affiliate a commission on any sales made to surfers sent by them.