Internet advertising of sexual services is offered not only by specialty sites, but in many cases by more mainstream advertising sites. Craigslist for many years featured an "adult services" section of this kind. After several years of pressure from law enforcement and anti-prostitution groups, Craigslist closed this section in 2010, first for its U.S. pages, then some months later internationally. In March 2018 the personals section of Craigslist was closed down. In 2017, the "Adult" section of Backpage was closed down.