1) Affiliate Marketing
This is perhaps the most popular one out there, since there are absolutely no barriers to entry. Almost anyone can sign-up for an affiliate program for free and start promoting the product or service on the Internet with hopes that someone will buy, giving them instant commissions. Affiliate marketers don't carry any risk, since they do not pay for the creation of the product, they do not handle customer service and they do not need any up-front investments.
