>Many public domain works include (nearly) timeless and entirely relevant information on wildly popular ‘interests’ such as making money, self-improvement, writing, playing sports, interpreting dreams, astrology, public speaking, entrepreneurship, recipes and lots more.

>The information is immediately usable – for many public domain works all you need to do is to simply do some minor editing, re-package the knowledge into a medium of your liking (we’ll discuss this in more detail a little later) and then sell it. Of course, you can also produce derivative works, but the power of immediate re-usability is one of the primary reasons many people are attracted to the public domain.

>There is an abundance of such information. We’re talking about publications that span over a century, and maybe even more than that when you take into account classic works that were published before copyright law even existed.

>Use of a particular public domain work by someone else does not mean that you cannot use that same public domain work for your own commercial purpose. In other words, you can use the SAME public domain resources that someone else has used, and restructure them to suit your commercial venture. This is the real strength of the public domain – the information is not a resource that is ‘used up’ over time – in fact as more and more people begin to embrace the ‘free information’ movement (and the open source movement in software development), you will find that the public domain will only increase in size over time.

>Public Domain works are in diverse mediums. You have software, books, instruction manuals, photographs, music and even government publications. Any and all of these mediums can be used to generate specific and different types of selling opportunities.

>Public Domain works are not restricted in the format they are stored. Thus you can convert a book on interpreting dreams into an audio course, or create a website around a book on public speaking. This is more of a ‘how to profit from public domain works’ feature, but it’s important enough to note here.

There are many different reasons that public domain works are profitable. But essentially, the main reason is that they allow you to quickly and inexpensively start an ever ending info product business online with very little effort.