Absolutely. As I noted in my presentation, metadata can reveal extremely personal information about people that also will echo Ms. Vonn's points that these people often don't know is actually being revealed. That can include, as I said, the histories of websites they visit, so it's like looking at cellphone calls.
The metadata for a cellphone call can tell you who you called and for how long you talked to them. It can't tell you the contents of that person's phone call, but it can tell you how many times that person speaks to them, how many times they visit their bank's website, what their bank's website is, what other websites they visit. It can definitely reveal a pattern of behaviour that tells a lot about a person.