[sjruckle]

It's more like the combination of ip / website / using-adblock / screen resoluction / installed fonts / installed plugins and their versions / hash-this / hash-that are individually non-identifying by themselves, but a combination of them can be used to uniquely identify an individual. [1]

But who, exactly, is the individual? Well, that comes later. Maybe your blocker fails to block something that is gathering that data plus your identity. Now, all of that activity (that was previously not tied to an individual) can now be safely linked to you, the individual.

1: https://panopticlick.eff.org/

[theptip]

Very good point, those fingerprinting techniques were what I was missing.

Also, thanks for sharing that EFF link, I really like the breakdown of how much entropy they can get from each fingerprint dimension.