Some people make a living marketing other peoples' stuff online. One is the author of The Super Affiliate Handbook: How I Made $436,797 Last Year Selling Other People's Stuff Online, a book that purports to show you how it is done. I don't have $75 for the book, so I am learning as I go.
I am now an affiliate for Amazon.com, eBay.com, Half.com and The Coupon Clippers. I've started posting the links on my blog, forum signatures, and articles I write for other websites.
I earn about $20 a month from Amazon, without much promotion at all. Most of my purchases are made through some plain text links on another site (not this blog).
For me, becoming an affiliate marketer allows me another opportunity to earn passive income, my new hobby. I spend a few minutes creating text links, add them to my articles or posts, and leave them alone. I log in to my Amazon Associates account a few times a week to check on the progress and am pleasantly surprised when a sale shows up.
However, I haven't made more than $5 on any one item and was slightly jealous to see that many Amazon Associates have had commissions of $100 or more on a single item. One associate mentioned selling a $1,000+ watch and earning a large commission for it. That would be nice, but for now I am content to build up my traffic and hope my referral links get the clicks.
I'll let you know how my progress goes, so keep an eye on my blog for an update.