I've read around 30 of these books (not including the series ones) and I think I turned out alright! I agree with Sugar and Spice about "The Face on the Milk Carton"... WTH? Now, some of these books can be looked at in a different light, but the books that I've read are great!
Some people need to find better ways to spend their time than critizing a book's controversial content... If you don't like the title, don't read it... If you read the book and you don't like it, donate it to a local library and you'll never have to look at it again!