Facebook spent years debating whether or not to supplement its like button. In October, the company finally added six emoji buttons, with the hopes of letting users express themselves more widely. As the company had discovered, there are many instances when people don’t like the stories they hit “like” on. Often, users impulsively hit the thumbs up icon to foster a connection with the person who posted. While the like button did cultivate positivity, it was an inappropriate response to tragic or sad news.

Twitter, which has become a crucial source for breaking news, is learning Facebook’s lesson as well. The recent Paris attacks is a perfect example of when “like” isn’t an appropriate emotional response.

But as TechCrunch points out, Twitter’s been on a quest to simplify its service—it’s the motivation behind the seemingly insignificant change from stars to hearts—and an expanded set of emoji responses could serve to complicate a service that most people already find convoluted.