Hi there! I believe you can make his page ‘private’ – you can set his page to only be viewed by his friends and families so that no one else can post on his page. I believe there is a setting also where you can view responses first before allowing them to be posted. It’s a great way to stay connected to people!
I am both a family member and service provider. My brother likes posting pictures of the things he does on Facebook and his page is very protected – people have to add him as a ‘friend’ first before posting on his page. It is very supportive. If your son is also interested in a Pen Pal Program where he can meet other people, there’s one offered by my organization called Hand Over Hand. We are able to match a volunteer up with your son who will write to him regularly (whether it be through postage, email, Facebook, Instagram or Twitter – whatever he prefers). Here is the webpage if you are interested: http://www.handoverhand.ca/pen-pal/
There is another site called Tyze which is a specific tool for keeping an organized, safe network online: http://tyze.com/
Hope that helps!