Because users demand it, perhaps?  I mean, stay with me, but I happen to think Dropbox is a calamity that only was possible because of the Browser wars taking out pretty much everyone, with the survivors basically going insane.  Peer-to-peer service discovery, built-in, should be a major feature by now.  I shouldn&#x27;t need to worry about my Face-privacy; my portable computer has the capability to handle that for me.  If only someone would program it so.