@Hermes
According to StatCounter, among Windows versions, WinXP has a market share of 3.78% in Russia. This is more than Win8 has or Linux on desktops.
Whatever those webmasters are driven by, it's not the goal to please their user base.
As for engines, ESR 52.9 is the most secure, stable and field-tested among Gecko based browsers.
BTW, Chromium (aside of Google's murky reputat
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