This is a private domain, which contains several themed websites. Descriptions and links to all of them can be found on "Websites" tab. Currently, all parties are non-commercial and reflect the interests and passions of their author. Despite the fact that these pages are purely hobby, have specific goals for which they are built. Although each of them covers a different topic intention of the author is that they claimed a new and valuable content to the Internet and contribute to the spread of useful knowledge. The pages are constantly expanded. All observations on the content and functionality of the pages that belong to a domain 4fm.pl can be sent to the address given in the "Contact" tab.
For all of your constructive comments I would be very grateful.