|What's that Mommy?|
Some libraries will not use google safe search or other child protection programs even for the very youngest children, considering it an issue of interfering with freedom of speech. Now, personally I don't know why gross pictures of women's crotches or male giant penises is an issue of speech, but some people do. If you don't want what happened to my child to happen to yours, check you local libraries attitudes and rules about kids access to pornography.
At any rate, we all know there are great things at the library, but just in case.