The Internet had long ago turned navel-gazing into an international pastime, but self-tracking takes the self-absorption to a new level. Using elaborate graphs, pie charts, websites and newer technologies, self-trackers catalogue everything in their lives, sometimes with no clear result.
Self-trackers like Messina and Evans could spend hours online, charting, analyzing, tracking. Life as a series of pure, distilled data points, up for interpretation.
—Monica Hesse, "Bytes of Life," The Washington Post, September 9, 2008