If you love leaving customer reviews on sites like Amazon, it may be beneficial to look into affiliate marketing as a source of income. Word-of-mouth advertising is still a huge lead generator for many companies, and a lot of businesses are willing to share a portion of their profits with persuasive individuals who will promote their products to the public.
However, this only further illuminates the exponential rise of online business today. Considering that the internet is still largely in its infancy, as the modern conveniences give way to near-instant delivery of products via drones, 3D printing and other means, and as virtual and augmented reality help to improve the online shopping experience, nearly all our commerce will eventually be conducted through online channels rather than offline channels.
The internet changes so fast that one year online equals about five years in the real world. But the principles of how to start and grow a successful online business haven't changed at all. If you're just starting a small business online, stick to this sequence. If you've been online awhile, do a quick review and see if there's a step you're neglecting, or never got around to doing in the first place. You can't go wrong with the basics.