Synopsis As Introduced Amends the Criminal Code of 1961. Provides that if a child sex offender who is required to register under the Sex Offender Registration Act knows that a social networking web site or an instant messaging or chat room program allows a person who is under 18 years of age to access or use the web site or program, it is unlawful for the child sex offender to knowingly use that social networking web site or instant messaging or chat room program. Establishes exemptions. Provides that a person who violates this provision is guilty of a Class A misdemeanor for a first offense and a Class 4 felony for a second or subsequent offense. Effective immediately.