I appreciate Pixiv letting users set their preferred region and actually respecting that setting, unlike Twitter which ignores the user's "country" setting and do all ad targeting using GeoIP instead.
It's especially nice given that a fair number of Japanese websites are aggressive about blocking foreign registrations even to the extent of blacklisting known VPN nodes. First thing I did upon reading this headline was confirming that my actually-created-in-Japan account hadn't ever had its location setting autoupdated by geoip.