Facebook should not be responsible for each content posted by their users. People should know their limitations. On the other hand, Facebook should also have additional security protocols when signing up which limits under aged individuals in using the service.
well facebook already have this under aged rule . less then 18 years can't join facebook. but facebook is just a software. it is not a humen. I see lots of kids joining facebook but they add their age more then 18 years then facebook can't do anything. people should know their on responsibility and stop making facebook fool.
and yea facebook have other rules too.
your account will surley get banned if you do, Abuse, if you copyright other's content .