I say this with absolute genuine praise: If you met your November wordcount goals, if you got your badge, CONGRATULATIONS! I don't care if you got to 50kw or 220kw (as did my publisher, all written from the madhouse here in Dallas). If you set goals and met goals, writing, editing, reviewing, blogging, whatever, I offer you a congratulations for doing what you said you'd do.
Despite the disruptions this month -- and yes, I just called the birth of my son a "disruption" -- I managed to hack out about 20kw on my current WIP.
I have daily goals of 1000-2500 wpd (words per day), and I average 1500 wpd most days. I met those goals on the days I wrote, which tells you I wrote approx 15 days out of 30 this month. The only day I recall starting and not meeting that goal was the day my wife was induced for labor. I managed to get 500 words while we waited for the oxytocin to kick in and I kept getting distracted by the television in the delivery room (I hate television, but my wife loves it).
Don't stop writing just because November passed, and don't spend the next 11 months on your NaNo book. Rest a little if you need it. Write a few shorts just for fun, or some poetry. Edit a couple of months on your NaNo and send it off.
And then ON TO THE NEXT! Don't wait for NaNo 2011 to write your next masterpiece!
If you ask me, May should be the other NaNoWriMo month, but nobody asked me.