Is it possible to determine who's following a SP site

In SharePoint Online this seems not to emerge somewhere unless in My Profile, which seems to be replaced by Delve. Currently Delve does not expose this info but there was a request about it in User Voice (https://office365.uservoice.com/forums/273487-delve/suggestions/10026063-show-websites-i-m-following-on-delve). However, as far as custom development goes, you can check the social.following namespace from the CSOM or rest (https://msdn.microsoft.com/en-us/library/office/jj945068.aspx#bkmk_FollowSites)