PHOENIX – There is a new push through out the Valley to crack down on internet escort services.

Two main targets are Desert Divas and Craigslist.com.

Police say there may be as many as four thousand “johns” involved in the Desert Divas case.

Phoenix Police continue to round up alleged members of a prostitution ring, which operated through online escort services.

Police can’t say yet if any of the “johns” they’re investigating will face charges.

More than 50 people have been arrested.

Craigslist.com is currently cracking down on sex ads, particularly solicitations for child prostitution.

Attorney General Terry Goddard [pictured] announced a multi-state agreement to curb inappropriate content under the website’s “erotic services.”

“It’s a constant battle to try to make sure that porn purveyors, prostitution sellers are not using the internet behind our backs,” says Goddard.

Under the new agreement, Craigslist will require posters of erotic services to pay for ads with a valid credit card, and will have to provide a working phone number.

Craigslist is now attaching tags to posts with inappropriate material so computers with parental control will block that particular link.