Denis Harscoat is the founder of Quantter and co-organizer of the London Quantified Self group and the new Paris QS group. He and co-founder Francis Dierick noticed people quantifying their activites on Twitter, and created a simple way to gather this data together. In the video below, Denis takes us on a tour of Quantter – leveraging Twitter hashtags to help people track their daily activities, receive motivating cheers from their friends, and help them reach their goals. Quantter is also a proud sponsor of the Quantified Self Conference in May, so you can meet Denis and Francis there! (Filmed at the Amsterdam Quantified Self meetup held at Mediamatic).