Just after midnight last night, I typed out my first words for Nanowrimo this year. Technically I'm doing what I call "Cheatowrimo". In the strictest interpretation of the rules, your project only "counts" if you lay down the first words on November first. I started with around 19,000 words on my current novel; I'll be using Nano to add to, and hopefully finish, this draft.
Maybe I don't have the same stake in it as someone who's starting from scratch. But whatever gets me writing, right?