Just curious, have you guys tried reaching out to Microsoft at all to get this resolved before going public with it?
I highly doubt anyone near the VP level at Microsoft has any idea that some team in China did this.
If the "VP level" at MS doesn't have enough control to prevent an entire department in China from ripping off a popular site and going live with it... then damn. I see no difference between that and Ballmer himself copying and pasting the code.