Being a parent myself I can certainly vouch for the dangers and temptations that social media brings. Finding that happy place between snooping and keeping your kids safe is very hard. In my experience keep a healthy and open relationship with your child and encourage them to share their life with them. From an early age and soon when they get involved with social media start to discuss with them the dangers and encourage them to speak to you about anything. Be reassuring that bringing something to you will not get them in trouble and that you are simply there to advise and support they will start to share with you. If your have a nice and open relationship they quite often will be more than happy to share access to their social media accounts. Remember that forcing them to share access or being hard on them or banning them will only make them find a resourceful way to create alternate accounts or gain alternate access using methods and accounts you don't know about. You can't force someone to share with you but if you foster an environment that they feel comfortable to do so this is the best way.