This week, Twitter tried increasing its emotional pull by ditching its star button in exchange for a heart, prompting users to "like" a post instead of the old "favorite" option. But how much will users and brands really like the change? On one hand, according to a survey of Twitter users by analytics company UserTesting, 74 percent preferred the heart, 10 percent preferred the star and 16 percent had no preference. Although, several news stories have cropped up highlighting angry tweets about the change. Reactions from marketers, on the other hand, seem to be more of a mixed bag. Adweek asked eight agency executives about their initial impressions and predictions for Twitter's heart. Some found it to be a promising evolution for the platform, which in the third quarter of this year saw user growth stall. However, others were not impressed.