“At the forefront of this movement is Quantified Self, a website attracting members from around the world. It has branches in about 50 cities and a core group of dedicated self-trackers estimated at around 7,500 people. Quantified Self’s motto is “self-knowledge through numbers” and its members are united in a belief that thorough data analysis and statistics can optimize the way we live.”
via New Trend Towards Self-Monitoring Using High-Tech Equipment - SPIEGEL ONLINE