Note: There is a <meta> tag on this page which has to be present in order for the UTF-8 characters to be correctly encoded when they're sent to the server.
Dev note: Lint throws a lot of warnings of invalid characters for all the UTF8 text. These are being ignored!
This page sets a page-level custom target (aka custom criteria) which uses UTF 8 characters in both the key and value: 'لغة' = 'انجليزي'. That translates to Language=English.
300x250, the image below should say 'UTF8 Targeting' and the landing page is www.google.com
Bottom of the page...