Independent Innovators, of course, want to get paid.  Some will simply put a "tip" jar on their blog.  Some will send users through the PayPal website.  And some will want custom interfaces that support subscriptions, custom user interface and more.

All can benefit at many levels by checking out the new book Pro PayPal E-commerce from APress by Damon Williams, Manager of the PayPal Developer Network.

The book is both technical and informational so don't be put off by all the code (some in Java, some in PHP) the overviews of the whole process of PayPal and all the myriad of options is worth checking out by everyone.

Recommendation: Making money is always a good thing for Independent Innovators and PayPal is the one of the most common ways especially for non-software companies.