In the late 1960s, some magazines began to move into more explicit displays often focusing on the buttocks as standards of what could be legally depicted and what readers wanted to see. By the 1970s magazines containing images of the pubic area became increasingly common. In the UK, Paul Raymond acquired and then relaunched Men Only in 1971 as a pornographic magazine, and then launched Club International in 1972. Playboy was the first to clearly show visible pubic hair in January 1971. The first full frontal nude centerfold was Playboy's Miss January 1972. In 1974, Larry Flynt first published Hustler in the US, which contained more explicit material. Some researchers have detected increasingly violent images in magazines like Playboy and Penthouse over the course of the 1970s, with them then returning to their more upscale style by the end of the decade. Paul Raymond Publications relaunched Escort in 1980 in the UK, Razzle in 1983, and Men's World in 1988. Sales of pornographic magazines in the U.S. have declined significantly since 1979, with a nearly 50% reduction in circulation between 1980 and 1989. The fact that the U.S. incidence of rape has increased over the same period has cast doubt on any correlation between magazine sales and sex crimes. Studies from the mid-1980s to the early 1990s nearly all confirmed that pornographic magazines contained significantly less violent imagery than pornographic films. In the 1990s, magazines such as Hustler began to feature more hardcore material such as sexual penetration, lesbianism and homosexuality, group sex, masturbation, and fetishes. In the late 1990s and 2000s the pornographic magazines market declined, as they were challenged by new "lad mags" such as FHM and Loaded, which featured softcore photos. The availability of pornographic DVDs and above all internet pornography also led to a decline in magazine sales. Many magazines developed their own websites which also show pornographic films. Despite falling sales, the top-selling U.S. adult magazines still maintain high circulations compared to most mainstream magazines, and are amongst the top-selling magazines of any type. Paul Raymond Publications dominates the British adult magazine market today, distributing eight of the ten top selling adult magazines in the UK. There were about 100 adult magazine titles in the UK in 2001. Common features Several magazines feature photos of "ordinary" women submitted by readers, for example the Readers Wives sections of several British magazines, and Beaver Hunt in the