DLL was turned on at Norwegian WP almost a year ago. I did not turn it off. I wanted to see what happened. The system has never been able to figure out which languages I visit most.
The system still tries to convince me that I visit Arabic, Chinese and Russian. Which I might have done due to the fact that the languages are presented first. The system influences my choice, but I do not seem to be able to influence the system. The system in this way is self confirming, it makes choices for me and then assumes it is my choice.
The system has figured out that I visit English, but I guess I have that in common with almost everybody reading Norwegian so it is not a personalized choice. It is everybody choice.
The system has not been able to figure out that I visit Italian at least as often as French. The system "thinks" I visit Spanish and Portuguese in spite of my more frequent visits to Italian.
The system has not been able to figure out that second to English I visit German. If I look at an article in another language I most often look at the English article and second I visit the German article. I visit German almost as often as I visit English.
The system does not reflect my personal work pattern. The system is not personalized to me. Calling this personalization is a sham and a shame. I have no idea who it is personalized to, but it most certainly is not my person and it seems to be automated guesses based on centralized assumptions of what someone guesses I might do without consulting me. and they have nothing to do with being personal.
If I read and do not log in it gets worse. It most certainly does not reflect the languages that are often used by persons reading from Norway. The system cannot possibly reflect work patterns from ip-adresses in Norway.