Roman Catholics and Greek Orthodox in the United States have collaborated on a new website to instruct Web users, primarily parents, on how youths can navigate the online world, taking advantage of its promise while steering away from its pitfalls.

The site, www.faithandsafety.org, was activated in the middle of June, which is Internet Safety Month.

Even in its first days, it is loaded with news about sites that teens use, eyebrow-raising details about children’s first exposure to online pornography, suggestions on how to use technology safely at home, and tips on negotiating the mobile-app scene.