Social Media Extension beta program
Social Extensions should be available to all advertisers and not only to some! I have stopped my campaign because all of my competition has access to the Social Extensions beta program and new bing advertisers, like myself, do not!
Admindareo (Admin, Bing Ads) commented
I did some queries for "passport services" and related terms then saw that some of your competitors have Twitter annotations. This is not a new social media extension but instead an annotation which is automatically generated by Bing. This is typically done if there is a 1:1 mapping between your destination domain and a well-known Twitter account.
Please let us know if you have any additional questions or feedback.