Website using the € symbol on their website - meaning it may accept payment in Euros.
Website using the ¥ symbol on their website - meaning it may accept payment in this South Korean currency.
UTF-8 (8-bit UCS/Unicode Transformation Format) is a variable-length character encoding for Unicode. It is the preferred encoding for web pages.
A canonical link element is an HTML element that helps webmasters prevent duplicate content issues by specifying the "canonical", or "preferred".