If you cast your eyes to the left-hand column of this blog, you'll see a section called "Ways to make money".
Under that section, you will see a list of titles and brief descriptions. They are actually advertisments similar to those "Ads by Google" ones you see on most web pages (including this one).
The difference with these adverts are that they are for products being sold via the ClickBank affiliate program.
They are displayed on this site (and some of my other sites) by a script that I wrote myself, which I've called CBIntuition. It selects all the ClickBank products that contain a pre-defined keyword, and then chooses up to 5 of them at random to display on the page.
The advantage of this is that many ClickBank products pay huge commissions on sales - up to 75% for some products.
The script is still under development, so it's not yet available to purchase, but it should be some time in December 2007.
The ad display script works just fine. I'm now working on an admin and configuration script. Installation will be very simple - simply copy it to your host.
The most difficult part of this script is keeping the ClickBank marketplace database up-to-date. This changes almost daily, so it should really be updated at least weekly.
I'm working on another script to do as much of that as is possible.
The script will be available from my software store, Dryice Computing, where you can find out more details.