The truth is much more complicated. It’s true that affiliate programs can be sources of phantom revenue and off-brand promotion. But managed properly, they can also make up 5-15 percent of online revenue and have an ROI among the highest of any online channel. CMOs are realizing that affiliate marketing can be an important part of their arsenal and are integrating the channel into their overall marketing strategies.
22. Advertising – This is definitely the most old-school way of earning money with a blog. It’s also starting to become the least common way. You can sell advertising spots directly on your site or you can sign up with a company like Google AdSense or Media.net. Either way, you won’t see a whole lot of money from ads until your views are well into the thousands each day.
The problem with affiliate marketing, like many other home business options, are the so-called gurus and get-rich-quick programs that suggest affiliate marketing can be done fast and with little effort. Odds are you've read claims of affiliate marketing programs that say you can make hundreds of thousands of dollars a month doing almost nothing ("Three clicks to rich!"). Or, they suggest you can set up your affiliate site, and then forget it, except to check your bank deposits.