How is my local public library using social media?

How is my local public library using social media? my local library is using social media by using websites via computer, telephone, tablet also visiting my local library.

https://www.facebook.com/ourcbcity This is the City of Bankstown   Facebook site which  everybody are connect and search thing.
https://twitter.com/ourcbcity  This is twitter site on City Bankstown  which everyone share and comment .
https://www.instagram.com/ourcbcity/ This is City Bankstown site which people from around share pictures and write comments
https://www.youtube.com/channel/UCFDSymRVxUSM4uxvUan8nfg you tube is a popular website in City of Bankstown site
https://www.cbcity.nsw.gov.au/Council/Snapchat snapchat site on City Bankstown has exclusive news and  
 captures  events live .