WePlay (http://www.weplay.com)

Parents need to know that this social networking sports site makes an effort to keep things clean and safe, especially for younger users. There's a strong language filter for all open text fields (it seems to get the job done) and photos and videos are moderated before they're posted. Teens 13 and up need to provide their full name and email address when registering, but only a first name is required for kids under 13. Without a parent's permission, kids can only use preselected comments and can't upload videos or photos. Parents can also open a family account that lets them monitor younger kids' usage or assign/remove permissions. Users are friendly, but for younger kids, there's the potential for hurt feelings, since other users can ignore their requests to be friends.