YouTube and Ning Just Say No to Sex

What things did Youtube and Ning just say ? They just say no sexy and porn.
Why they don't want sexy and porn things in there website ? Because sexy and porn things was bad.
When did it happen ? It happen in December 3, 2008.
I think exy and porn things was very bad because exy and porn things will make you been bad
http://bits.blogs.nytimes.com/2008/12/03/youtube-and-ning-just-say-no-to-sex/