Proper page encoding?

Hi,



I was on the W3 website today, and I decided to run my site thru the HTML validator. And I noticed my website is encoded in “iso-8859-1 (Western Europe)”, but the W3.org website is encoded in “utf-8 (Unicode, worldwide)”. Is there a particular reason that the W3 website is encoded that way? It would appear to me that if the W3 website is encoded in utf-8 that my site should be encoded that way to? Unless I am missing something?



Thanks