In last year's NaNoWriMo, many of us posted here as we wrote - it is by no means a rule for ZNWM participants, but a good idea to help keep you on track and show people what you're working on.

It all functions on the honor system; as long as you say you're in, and post a 30,000 word story [with word count] at the end of the month, you will have succeeded.