If you share reviews to any websites you can add those links (like YouTube, websites, blogs, etc.) in you Profile, under "Where I Share Reviews".
You can also connect your social accounts in your Profile for easy sharing of your reviews. In the "About You" section of your Profile, just scroll down to connect! *NetGalley is working on adding Facebook and Instagram connections, but in the meantime please add links to those accounts by clicking Add a Website (as seen in the screenshot below).
You will also be prompted to connect your accounts on your Dashboard and when submitting Feedback.