As a full time online marketer and webmaster, this is a question I have considered many times and found my own answers through many years of trial and error. Of course, I have taken the passive route in my quest for that online income. This means instead of producing my own products, I market and promote affiliate goods and services. I do no direct selling on any of my websites. I collect no money and I don't even have a payment program or system in place.
All my income and commissions come from referring traffic or clients to the affiliate companies which I promote. Totally passive.
These companies do all the selling, delivery of products, customer support, everything... I just get a small percentage for having referred that customer or client. This passive method has worked extremely well for me but keep in mind, selling your products and services will be much more lucrative since you will receive the majority of the income instead of just a small commission or referral fee.
However, if you're like me and want a more "hands-off," passive income from your web content, here are some of the things I have learned over the years. You might find some of these tips helpful in your monetization. I have placed these tips in the form of a "q and a" format...
Learn more information - http://www.sitepronews.com/2011/02/24/how-to-monetize-your-web-content/