re: web sites honoring anything other than ascii
It's one of my pet peeves that, 21 years after the publication of the Unicode standard, people still consider characters larger than 7(*) bits to be someone exotic.
Especially when we are, implicitly because we're reading a Microsoft blog, all using an operating system that is fundamentally Unicode.
(*)Yes, 7, not 8. If it's larger than 0x7f it's not ASCII. There may have been a proposal for an 8-bit form, but it was never really adopted.