Yes, you can choose to refresh the social metrics in a book once a day, for article shares and YouTube likes/views. Make sure you're in the 'edit' mode and hover over the social shares tile below the front cover. You will see a green 'refresh' button, click and the social shares will update.

e.g. 

Here's a short video on social shares for online articles

And this is another short video on refreshing YouTube data. This comes direct from YouTube's API and can be refreshed manually from the report metrics summary once a day

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