Dive Brief: 

• Lisa Manowitz, former sales leader for competitor Twitter, started her new position as East Coast head of partnerships for Pinterest on Tuesday. 
• Manowitz's hire rounds out Pinterest's sales team to cover the entire U.S., as she joins Tram Nguyen on the West Coast and Bill Watkins in Chicago.
• Pinterest is working on building its ad business and will soon begin opening its first ad product — Promoted Pins — to more brands. 

Dive Insight: 

Twitter has been steadily growing its ad business just like Pinterest, so it's natural that Pinterest would be interested in a former sales leader from its competitor. Now that Pinterest has all regions of the U.S. covered, the ad expansion will hopefully go smoothly from here on out.