Likewise websites that stream your input key by key instead of submitting the text when you press the submit button should in theory be able to easily identify you by the timing of your keypresses. I've only heard of a couple of instances of sending keys as-you-type but I think that if someone made the kind of project you spoke of above, then we would start seeing more tactics like the kinds I mention in order to counter that.
Even if you then proceed to disable JavaScript globally and only browse the web in 1.0 style with user-initiated GET and POST, the way that you write has some uniqueness to it that might be possible to identify.
>> Kill Analytics[1] is a chrome extension that runs in the background while you use the web.
When you visit a website, it sends a little extra data to the server which breaks that site's Web Analytics. <<