

They certainly are, but they’re also a bit dystopic. I don’t want random people looking up stats about my online presence, and I certainly don’t want the police doing that either.
I can see tons of cool applications, but also tons of ethical issues.
Sure. My point is that same technology can and will be used to violate peoples’ privacy, and in some cases could create dangerous situations (e.g. domestic violence victim being recognized by their attacker).