[Lestrade]

50k is certainly a shortish novel, but it's not like you have to stop there XD And a lot of people who do NaNo add more and edit later.

I don't think it's generally going to produce a really good, polished product, but that isn't really the point. My 2010 NaNo novel had parts that I really, really liked, and I ended up pulling out some of those parts, shuffling other stuff around, and turning it into a short story that I really like.