Backpage, similar to Craigslist, allows users to post ads in a variety of categories.
But it's notorious for its "adult" sections, which authorities say is a thinly veiled cover for sex work and trafficking.
Adult ads were some of the only posts that cost money; the website generated 5 million in 2014.
After Craigslist stopped hosting erotic services ads in 2010, Backpage's ad volume grew by 50 percent.
According to the 2013 US Trafficking In Persons Report, Indonesia is a major source country for women, children, and men who are subjected to sex trafficking and forced labor.' PHOTOGRAPH BY Jefta Images / Barcroft Images London-T: 44 2 E:[email protected] York-T: 1 2 E:[email protected] Delhi-T: 91 11 4053 2429 E:[email protected] (Photo credit should read Jefta Images / Barcroft Images / Barcroft Media via Getty Images)TANGERANG, INDONESIA - AUGUST 16: Suspects of human trafficking arrive at Soekarno-Hatta Airport on August 16, 2016 in Tangerang, Indonesia.Federal agents shut down the classifieds website in an effort to purge the internet of sites that enable illegal sex work and sex trafficking.Law enforcement also charged one of the site's founders as part of a 93-count sealed indictment.See Also: Michigan governor ends supply of bottled water to city of Flint Backpage had already shut down its adult section as of January 2017, but internal emails allegedly show the site's operators were more interested in masking illegal activity than in reporting it to authorities.In addition to consensual sex work, the site has been accused of being a haven for child sex traffickers.