[toxican]

What do you mean by "support winxp"? Websites are pretty OS agnostic. Do you mean they aren't compatible with IE6? Can't really test it currently, but I can't imagine these sites would work in the latest Firefox on Win8, but not on the latest Firefox on XP.

[kej]

Windows XP doesn't support SNI, which means browsers that depend on the OS for SSL/TLS can't handle those sites.