At scale metadata is MORE usefull than the specifics of the communication (web, phone, messages, videostreeams, ...)
Who talks to whom, When do they talk, how longm from where. What sites do they access, ...
It enables you to pick a person, find his friends, where do they meet(online and offline), where do they keep money, where do they spend it. What news do they read, what music, what their political leanings are etc.
It enables you to see the big picture. (of either a single individual or entire group of people)
The content only becomes useful, once you have general idea what is going on.
Who talks to whom, When do they talk, how longm from where. What sites do they access, ...
It enables you to pick a person, find his friends, where do they meet(online and offline), where do they keep money, where do they spend it. What news do they read, what music, what their political leanings are etc.
It enables you to see the big picture. (of either a single individual or entire group of people) The content only becomes useful, once you have general idea what is going on.