I think that's code for some Google Analytics-like service (from googling for "top-fwz1.mail.ru/counter"), I mean mail.ru is not only email, but a Yandex/Google

I think that's code for some Google Analytics-like service (from googling for "top-fwz1.mail.ru/counter"), I mean mail.ru is not only email, but a Yandex/Google-like conglomerate of various web services.