Unlike earlier non-social ad units, they appear rightinthe Newsfeed, not along theright margin, making them a viable format for the all-important mobile environment.
The beauty of oversized format bottles is that they are fun and festive in their own right, the kind of thing you are only opening for company or celebrations, and the wine itself hardly matters, with the exception of some mass-produced warehouse store or budget wines that are occasionally sold in magnums.