The site included the various categories found in newspaper classified sections including those that were unique to and part of the First Amendment-driven traditions of most alternative weeklies.
These included personals (including adult-oriented personal ads), adult services, musicians and "New Age" services.
Backpage is a classified advertising website launched in 2004.
It offers classified listings for a wide variety of products and services including automotive, jobs listings, and real estate.
In an amicus curiae brief, the National Center for Missing and Exploited Children says the efforts of Backpage are inadequate and their reporting lacked in several areas.