Dive Brief: 

• Twitter has expanded the targeting options for its Promoted Tweet self-serve ad dashboard. 
• New options include the ability to target users based on iOS or Android mobile advertising IDs and mobile numbers— in addition to email. 
• The biggest change is the new ability to create look-alike lists that target users similar to those that have already downloaded the Twitter app. It will also exclude current customers so there's no duplication. 

Dive Insight: 

Twitter is on a good trajectory of continuing to introduce new and valuable features for advertisers. The better the targeting is, the more advertisers will be interested and stick with the program.