[bertil]

Indeed on the copyright of collection -- which as a fact was abused; but not the change of nature of the information.

I really don’t think that you can make enough information particular enough to get away with disanonymisation techniques: you standing anywhere in a city, with a block accuracy is enough to identify most people on a transport map; even whether you like a handful of movies, and in what order or when you saw them is enough to isolate individuals from a VoD database.

[maxerickson]

A company can make use of the observations without aggregating them. For instance, if they have a documented interest in a tag, I don't really have a problem with them disseminating it to their vehicles and checking it against live scans.