Actually, that's the reason why I haven't written a Christmas themed novel: Because it doesn't sell all year round. But when I worked for the newspaper I wrote a Christmas short story every season--because the truth is, I do actually like the idea of holiday stories. I learned long ago that trying to jump on a writing band wagon is like trying to vote a month after the election: It's just too late.
RE: Are Valentine's Day books lining Cheryl's she-shed?