Are there any benifits to using rel="external" and should I be using it?

<div class="container">
	<a class="facebook" rel="external" href="" target="_blank"></a> 
	<a class="twitter" rel="external" href="" target="_blank"></a> 
	<a class="instagram" rel="external" href="" target="_blank"></a> 
	<a class="pinterest" rel="external" href="" target="_blank"></a> 
</div>

It’s meant to work with javascript I think. If I’m not using the javascript part then I don’t need it.

Here is an old topic on the subject:-

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