One very important point to keep in mind when you are writing your lenses, is that with all of the various types of technology and internet connectivity, your readers can potentially be reading your lens from an old computer with dial up service, a cell phone, an iPad, or one of the new tiny netbooks.
Squidoo is an Amazon Associate, and we can use their modules to create links to products and sell them. Squidoo splits the earnings with you directly, so that you get half of the earnings on each sale.
Amazon is a useful affiliate program to have. You need to get a lot of traffic to get sales, but you will get sales.