Residual income can easily be earned through Google's Adsense publisher program. You show Google ads on your web site... ads that Google automatically matches to the keyword content of EACH of your web pages...
Here's a good example of a web site that's monetized using Google Adsense:
Dubai Tourist Spots - this travel destination web site features interesting colors - bright yellow in the link text and an orange in the ad text, showing the flexibility of Google's Adsense system.
The ads are fascinatingly different on the web and the colors harmonize with the rest of the site. Well done.
All you need to sign up for the passive income publisher program is your own web site that meets certain minimal technical standards. You can't use a MySpace profile page as you'll notice that the owner already has his ads running there. You can't use a duplicate or affiliate link as you don't have control over the html coding of the page.
Adsense uses a unique javascript snippet that comes coded with your account number. It's a brilliant system and I highly recommend it to you!
BUSINESS EDITOR
Great system that Google Adsense. I love how the server 'senses' the THEME
and keywords of each page of a site, before delivering the most relevant
ads. The system works like a dream, and Google ought to be congratulated.
If you want to join Adsense, just go to my homepage link -
Australiasearch.net which is partnered with big Google herself.
If YOU want to join the amazing Google Adsense passive income advertising
program as a web 'publisher' - putting a snippet of code on your own web
site - then visit my site: http://www.australiasearch.net/ shown as my
Homepage and SCROLL DOWN on that search engine site to a green GOOGLE
button right near the bottom of Australiasearch.net site. I don't want you
to miss out on this extraordinary source of easy, automatic, passive
income. (Just for displaying an automatic strip of Google ads! ) - Geoff