Part of the reason for this is due to those Scholastic order forms they used to send home with you as a kid. It never failed that my sisters and I would order a bundle of books from it. After I would finish reading whatever I had ordered, I would go and read their books too. That means that I had a pretty eclectic reading list that included way more Sweet Valley Teen/High then it probably should have.
The worst part about the whole Adventures in Babysitting thing, is that the movie wasn't very good to begin with. If you've seen it before, you wouldn't need me to tell you that. I actually read the book based off of the movie first and was disappointed the movie wasn't as good as the book when I finally saw it. That just makes no sense if you think about it.