There doesn't appear to be any. I clicked to sign in with FB and after granting the webapp permission it presented me with three different users. It gives the c

There doesn't appear to be any. I clicked to sign in with FB and after granting the webapp permission it presented me with three different users. It gives the city and a unique id for each one. Each has it's own threaded conversation and reply to whichever one you want. I like the idea but not sure about the implied safety of it for those in need or vulnerable....