articles    based   on  the threads to  which   they    belong. This    helps   simplify    the
organization    of  articles    in  the newsgroup.
TIP
The free    news    server  news.gmane.org  makes   the Red Hat and Ubuntu
mail    lists   available   via newsgroups. The beta    list    is  available   as
gmane.linux.redhat.rhl.beta.    It  is  a   handy   way to  read    threaded
discussions,    and some    prefer  using   it  to  using   the Ubuntu  mail    list    archives.The protocol    used    to  transfer    newsgroup   articles    from    one host    to  another is
Network News    Transfer    Protocol    (NNTP), defined in  RFC 3977
(https://tools.ietf.org/html/rfc3977).  NNTP    was designed    as  a   simple
client/server   protocol    that    enables two hosts   to  exchange    newsgroup   articles
in  an  efficient   manner.
Whether or  not your    Ubuntu  machine is  set up  as  a   news    server, you can use a
newsreader  program to  read    newsgroup   articles.   A   newsreader  program
requires    just    a   connection  to  a   news    server. It  does    not matter  whether the
news    server  is  on  the same    machine or  is  a   remote  news    server  on  the other
side    of  the world.
Several programs    are available   to  connect to  news    servers to  read    and post
articles    in  newsgroups. If  you are interested  in  Usenet, you might   want    to
check   out a   program from    the Ubuntu  repositories    called  Pan.    Pan is  a
graphical   newsreader  client  that    can download    and display all the newsgroups
available   on  a   server  and display posted  news    articles.
References
http://www.mozilla.com—The  home    page    for Mozilla Firefox and
Thunderbird
http://en.wikipedia.org/wiki/Usenet—A   history of  Usenet