"You may not use Etsy to direct shoppers to another online selling venue to purchase the same items as listed in your Etsy shop, as this may constitute fee avoidance. This includes posting links/URLs or providing information sufficient to locate the other online venue(s)."
For example, you might have a link to your blog in your Etsy shop, and from your blog there might be navigation buttons or hot-links to your commercial website, or other online venues, where you sell the same items as in your ETSY shop. This is now a Don't.
I have noticed many team members have out-bound links to other venues in their shop announcement. Please be careful and discreet in which links you include in your Etsy shop.