[Alpha Kodiak]

I can find no definition of "belly sin", nor have I heard of it in 30+ years of association with evangelical churches, so I'm afraid I can't help you there.

While I find the site a bit "preachy", and would not refer to it myself, I would offer this thought in its defense. There aren't many sources out there for a Christian parent to refer to when trying to make decisions about movies and such for their teenage children to see. It is neither possible nor desireable to prescreen every movie to find out whether it would be suitable, so some reference is needed that has a viewpoint similar to that of the parents. This site is not trying to ban movies, merely to provide information about the movies to parents. As I said, the reviewer gets too "preachy" for my taste, but at least I have a pretty good idea of what the film is like so that I can make a decision on its appropriateness for my teenager.