If you’re participating in NaNoWriMo, then you may want to either let others know about your progress on an already existing WordPress blog, or you may even want to set up a WordPress site in order to make your work public.
The above article offers three useful WordPress plugins, so you can brag about your NaNoWriMo word count. :-)
Jokes aside, if you install one of these plugins, they'll make you accountable -- to yourself, and to your blog's readers. Therefore, you'll be more likely to complete the month successfully.