NaNoWriMo
NaNoWriMo is the National Novel Writing Month in November. It's a fun, seat-of-your-pants approach to creative writing.
"National Novel Writing Month is an annual Internet-based creative writing project that takes place during the month of November. Participants attempt to write a 50,000-word manuscript between November 1 and November 30. Well-known authors write "pep-talks" to keep them motivated throughout the process" (Wikipedia).
is a non commercial enterprise to bring the author out in you, and was launched on July 1st, 1999; 21 years ago.