Sex and Media Tips

Hi. I found a forum that was the closest to my concern. I want to know where I can find an online "handbook" regarding internet laws and content on websites when the members are 13 years of age or older. [such as advertising for porn, etc.] Is there something here that I can read or a site I can go to for this? The site I am concerned about is Piczo.com. They have turned a once more secure safe site into an open blogging site and anyone can just sign up and post anything there, including porn. I myself have flagged a couple blogs that were advertising porn. I spoke with the owner on the phone and he doesn't really think there is a problem and says that they are meeting the safety requirements and laws for content for members 13 and older. I just can't see that it's OK to have the site the way it is right now. I personally feel it's very unsafe for anyone under 18. He did mention that Piczo's goal is to appeal to those 13 and older, but I fear the site may be more then I would ever let my kids see.Is there a site that can give Piczo a look over to see if they are indeed providing a safe environment for their target age?