The number of Web applications to collect data and information about yourself continues to grow; if you want to track something, most likely there's an online tool to do it. This is great - especially since a lot of the applications seem to have a lot of users, which means an interest in data. Whether it is deliberate or not is a different question, but you know, that doesn't really matter. What does matter is that people are taking notice. However, as users, developers, and designers, we shouldn't be satisfied too quickly with what we have. Want more. Demand more. It's interesting and oftentimes fun to log data about your life - whether it be when you go the bathroom, your sugar levels, or your mood. You get some nice graphs and charts, it looks cool, and maybe you learn something about yourself.
But all the self-surveillance tools so far are mostly about a single dataset or two at most. You track your weight and what you eat, but it's more complex than that. Life is complicated and data is an abstraction of life after all. Do you eat when you're depressed or are you depressed when you eat? Do you feel better if you exercise? What about sleep? How much sleep and exercise is best for you? What days should you exericse and how many days in a row and for how long? What truly makes you happy? I want my self-surveillance application to not only give me the ability to find these answers but to give them to me with very little effort on my part.