FTP sites aredirectories of files of all types. These files can be in any form and can be found with search engines. E-mail is an electronic mail system in which different users can exchange messages. The content of the mail exchanged can take all forms. Although normally text, messages can be pictures or sound files.
Individuals can post messages and receive responses.
The messages will remain on the bulletin board for a limited period of time, such as two weeks. Individuals search for the most appropriate bulletin board for the subject desired. At this site will be hundreds of messages about that subject. These messages can be text, programs, sound files, or pictures. Each room has a name that may relate to the subject matter discussed.