Profile david roller Location: Cartagena, Murcia, Spain My name is David Roller from Cartagena, Spain. I am a team member of Frother. Frother is an app which helps to the Christian community to connect worldwide. I love to go for Trekking. Last activity: on 20/08/2018 Joined: on 20/08/2018 https://frother.es Design quotient Earn DQ points by participating in a challenge. What are (DQ) Points? DQ points are a measure of your contributions, they correspond to how active you are in the Research, Ideas and Evaluation phases of a challenge.