Every year there are a sad few people who write more than 50,000 words (turning their profile bar from blue to green) but who don't know that they need to validate (to turn the green bar to purple). Please don't wait till it's too late. If you have more than 50,000 words, validate as soon as possible. It's the first menu item under "My NaNoWriMo" in the navigation bar of this site.
If you have questions about how to do this, please contact KatherineWriting, TRRDEDEAN or myself or post your questions here.