I don't describe it as "not completely trivial" because I think it's some sort of laudable standard, but because you are implying that it is a completely trivial task.
It seem like our difference is about whether to give a worst-case security analysis or a best-case security analysis. :) It is a completely trivial task for a high percentage of potential targets. Some people aren't geolocated or are incorrectly geolocated. Some live in large cities. But a long tail of lesswrong users is almost completely identified by their geolocation.
Using information which in all likelihood is known to no-one else on this site but you, you've found a reliable method of uniquely identifying yourself.
No. The only information I used was that I am from Hungary. Nothing else. This fact about me is public here. (Obviously, nobody cares about it, but that does not make it a secret. Again, I am talking about worst-case analysis.)
I am really not monomaniac about privacy. I agree with you that it is not a big deal that somebody can be followed like that. But at least let's realize that lesswrong is unusual in this regard, and unusual in a bad way.
I have just realized that sitemeter has the following data published about my visit, in a searchable and browsable format:
en-us
Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US; rv:1.9.2.13) Gecko/20101203 Firefox/3.6.13 GTB7.1
I am not a privacy geek, but isn't this a bit too extensive? By the way, I am not from Etyek, Hungary, I am from Budapest, Hungary. Etyek is a very small village, so if sitemeter consistently identifies me as someone from Etyek, then it will be even easier to track my lesswrong browsing habits. It is very easy even without that.