The Newsgroups or the Usenet was created in the 80's and has matured to include Binary files, as storage and bandwidth has increased so has the Usenet, it now holds millions of files which can be supplied to you by news providers like Astraweb, Giganews etc.
This is just a basic introduction to what the Usenet is, for all the facts a great start is HERE
Guide to using Quickpar to repairing files
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