Stealth Christian books?

I saw an interesting discussion on Amazon.com regarding "stealth Christian books".  Apparently there are a lot of people who are morally offended when a book appears to be secular but they then find Christian content when they read it.  Some of the suggested solutions to this so-called problem were slightly frightening if they are are carried to there obvious final level of censorship and repression.  I wasn't surprised that some people had these type of prejudiced feelings but I was surprised that so many people didn't see that they were expressing pure religious bigotry in a public forum and were not ashamed of what they were writing.