Over at her own site, Mary Robinette Kowal notes that at the moment there are some published novelists who are bagging on National Novel Writing Month and calling it waste of time and a bad idea for aspiring writers. She counters this by noting that her novel Shades of Milk and Honey (which is fabulous, by the way) was a NaNoWriMo novel — that is to say she wrote it first as part of the that experience, then finished it and sent it off. So the suggestion that NaNoWriMo is a waste of time and/or effort is pretty definitively rebutted in her own experience.
My own comments to folks, professional novelists or otherwise, who want to hate on NaNoWriMo is as follows:
1. Dude, a program that encourages thousands of people annually to celebrate the act of creating words — of creating their own words — and you want to piss all over that? If you look to the right, I have some kittens you can set on fire while you’re at it.
2. Even if you think it’s a waste of time, it’s not a waste of of your time, so why do you care?
3. Alternately, even if something like NaNoWriMo doesn’t match your own writing process, there are a lot of writing processes out there. So if this one works for some aspiring writers, don’t crap on them for it.”