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Unfortunately, our site was never set up right after our rebrand to moz.com so I can't see the data and it's not something I've used before so I cannot give a recommendation on value of data. Just because we're not using it doesn't mean it wouldn't be or couldn't be of value.

Hi there. Yes, you should. Especially if summary contains parts of full article content or is very close in its content. Basically, if there is any chance that summary can rank for keyphrases, same as full article - do canonicalizing. Hope this helps.

Thanks,  I was clicking fetch and not fetch and render.