Yahoo and Bing ads now show Description Line 1 (D1) in both their ad text and ad titles (see the image below)

http://searchengineland.com/seeing-double-yahoo-bing-search-ads-show-duplicate-copy-headlines-ad-text-212596

Bing is claiming this has already resulted in a 10-15% increase in clickthrough. Any sites doing Bing or Yahoo ads should check for impact.