Anyone familiar with the html related with skype below?

<span width="15px" height="12px" class="skype_开发者_C百科name_highlight_offline" title="name"><span class="skype_name_mark"> begin_of_the_skype_highlighting

There is no such code ,but visible in DOM ,anyone knows?

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I believe is from Skype plugin installed in your browser. It convert any Skype strings into skype buttons or something like this.