SAN DIEGO – Thanks to the irresistible lure of free porn, no one can deny tube sites generate a large volume of traffic. For that reason, properties once considered lower than the Ninth Circle of Hell in the past year or so have become the darlings of adult advertising networks.

Pornoxo is the latest tube to join a network. Its alliance with TrafficHaus stands to make money for both companies, plus advertisers, a spokesperson said.

Under the TrafficHaus deal, Pornoxo offers new mobile and desktop ad zones in a variety of formats and sizes.

TrafficHaus also has expanded the spots and ad sizes available on the other tube sites in its network. A new skyscraper is available on YouJizz, pop-unders and mobile footers are available on xHamster and Redtube offers new tablet spots.

“We’re proud to be a top source for high-traffic sources and [to] partner with top-level publishers like Pornoxo,” TrafficHaus Chief Executive Officer Mark Bauman said. “This expanded catalog gives advertisers new opportunities to reach their target audiences with millions of impressions worldwide on the most popular tube sites online.”