In the United States Court of Appeals For the Seventh Circuit ____________________ No. 15-3047 BACKPAGE.COM, LLC, Plaintiff-Appellant, v. THOMAS J. DART, Sheriff of Cook County, Illinois, Defendant-Appellee. ____________________ Appeal from the United States District Court for the Northern District of Illinois, Eastern Division. No. 15 C 6340 — John J. Tharp, Jr., Judge. ____________________ ARGUED NOVEMBER 13, 2015— DECIDED NOVEMBER 30, 2015 ____________________ Before POSNER, RIPPLE, and SYKES, Circuit Judges. POSNER, Circuit Judge. Backpage.com (we’ll call it just Backpage) provides an online forum for classified ads sectioned by subject matter, such as rentals, real estate, jobs, and, among still others, “adult.” The adult section in turn is subdivided into escorts, body rubs, strippers and strip clubs, dom[ination] and fetish, ts (transsexual escorts), male escorts, phone [sex], and adult jobs (jobs related to services of-