Writing Challenges I wish to take on

I found these two on the web:
Tag You’re It, a place where stories were born in a collaboratively. It’s like the improvisation where one person starts the idea of the story and others contribute to develop the story. No one can predict how it grows and how it ends.

NaNoWriMo, National Novel Writing Month. Participants start writing on November 1 with the goal to finish 175 pages of novel by midnight, November 30. 50,000 words in 30 days means 1667 words a day. Compared with my 100 words a day (with gaps), I need to ratchet up my efforts!