Replace Email option in Unity previews to Share
The email option present in Unity previews is great. However, if one were to enhance that functionality, it would be by broadening its scope. That can be done by replacing "Email" with "Share". When a user click on the share button they can be shown a pop-up where options to share it to via facebook, email, twitter can be displayed. I believe the infrastructure to share stuff using Gwibber already exists. The main challenge here would be to incorporate a dialog box in Unity style since that is not current available in the Unity stack.