Kalev's Global Twitter Heartbeat study has been widely featured in the world's media, was ranked by Harvard's Nieman Journalism Lab as the #1 social media paper of 2013 and ranked #25 in the Washington Post's list of 40 more maps that explain the world. Most recently it was featured in an episode of BBC's Living Online describing Viraj Puri's work on creating a website to map bullying online in realtime.