Deprecate twitter

We further deprecate the use of twitter.

In cases such as historic guidelines and rules, we add
a note about using Mastodon.

In cases where a tweet URL was used, we replace with
an Internet Archive link because twitter has announced
that accounts that are not used for a period of time
will be deleted.

We add a few missing deprecated_twitter information
to the author.numbers and author.cvs files.

We remove references to twitter handles (after making
sure that both author.numbers and author.cvs has the
deprecated_twitter information).  When the "_README.md_"
files have their header information generated by
a tool, such deprecated_twitter data will not be present.

2014/guidelines.txt

@@ -41,6 +41,17 @@ ABOUT THIS FILE:
     Non-twitter users should force their browsers to reload the above URL
     to be sure they are seeing the most recent tweets.
 
+-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
+An important 2023 update to this historic note:
+
+The IOCCC no longer uses twitter.  Today the IOCCC uses Mastodon.
+For more information and to see our IOCCC Mastodon posts, see:
+
+    https://fosstodon.org/@ioccc
+
+End of important 2023 update to this historic note.
+-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
+
     While we try to post use news at:
 
         http://www.ioccc.org/index.html#news
@@ -631,6 +642,25 @@ JUDGING PROCESS:
     often accept their suggestions/comments about our remarks as well.
     This is done prior to posting the winners to the wide world.
 
+-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
+An important 2023 update to how winners are announced
+
+The IOCCC no longer uses twitter.  IOCCC winners will be announced
+by a git commit to the IOCCC winners repo:
+
+	https://github.com/ioccc-src/winner
+
+that, in turn, updates the offivial IOCCC web site:
+
+	https://www.ioccc.org/index.html
+
+In addition a note is posted to the IOCCC Mastodon account:
+
+    https://fosstodon.org/@ioccc
+
+End of important 2023 update to how winners are announced.
+-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
+
     Judging consists of a number of elimination rounds.  During a round,
     the collection of entries are divided into two roughly equal piles;
     the pile that advances on to the next round, and the pile that does
@@ -734,6 +764,7 @@ ANNOUNCEMENT OF WINNERS:
         http://slashdot.org
 
     that, depending on the willingness of the /. editors, may be posted
+
     to their site at the same time.
 
     Note that initial announcement will NOT contain source.  This is because
@@ -750,6 +781,25 @@ ANNOUNCEMENT OF WINNERS:
 
     We will also tweet, via @IOCCC, when the winning source is available.
 
+-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
+An important 2023 update to how winners are announced
+
+The IOCCC no longer uses twitter.  IOCCC winners will be announced
+by a git commit to the IOCCC winners repo:
+
+	https://github.com/ioccc-src/winner
+
+that, in turn, updates the offivial IOCCC web site:
+
+	https://www.ioccc.org/index.html
+
+In addition a note is posted to the IOCCC Mastodon account:
+
+    https://fosstodon.org/@ioccc
+
+End of important 2023 update to how winners are announced.
+-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
+
     It is pointless to ask the IOCCC judges how many entries we receive.
 |   Other government TLA or FLA snooping organizations are prohibited from
 |   either confirming, denying or revealing any knowledge of this data point.
@@ -796,6 +846,17 @@ FOR MORE INFORMATION:
     Non-twitter users should force their browsers to reload the above URL
     to be sure they are seeing the most recent tweets.
 
+-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
+An important 2023 update to this historic note:
+
+The IOCCC no longer uses twitter.  Today the IOCCC uses Mastodon.
+For more information and to see our IOCCC Mastodon posts, see:
+
+    https://fosstodon.org/@ioccc
+
+End of important 2023 update to this historic note.
+-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
+
 Leonid A. Broukhis
 Simon Cooper
 chongo (Landon Curt Noll) /\cc/\

2014/maffiodo2/README.md

@@ -25,8 +25,8 @@ cat image.rgb | ./prog '  .,:;!$#@'
 ## Judges' remarks:
 
 On the face of it :-) given what this program does one might wonder what makes
-this winner special.  But when you realize the source is small enough to tweet
-on twitter you understand.
+this winner special.  But when you realize the source is small enough for posting
+to social media that has a small size limit.
 
 Who will be the first to tweet this source?  How many re-tweets will such tweet
 get?  And how many people will really understand the tweet?

2014/rules.txt

@@ -230,6 +230,17 @@ FOR MORE INFORMATION:
     Non-twitter users should force their browsers to reload the above URL
     to be sure they are seeing the most recent tweets.
 
+-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
+An important 2023 update to this historic note:
+
+The IOCCC no longer uses twitter.  Today the IOCCC uses Mastodon.
+For more information and to see our IOCCC Mastodon posts, see:
+
+    https://fosstodon.org/@ioccc
+
+End of important 2023 update to this historic note.
+-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
+
 Leonid A. Broukhis
 Simon Cooper
 chongo (Landon Curt Noll) /\cc/\