This year's SXSW keynote by danah boyd is probably one of the most insightful contributions to the debate on privacy and social networking. For those who have not yet seen it, the rough transcript can be found here . It puts a finger on so many important points, that it should be required reading for anybody who wants to work on consumer web services. To summarize a key point: in real life things are usually not as simple as they seem. And that's bad news for the technocrats who typically build and run the virtual environments where social interactions are taking place online. Engineers and scientists like to simplify and standardize problems, apply Occam's razor, optimize systems along the dimensions of an assumed known quantitative model etc. The operators of today's large web properties study and analyze their users behavior and think to understand them better than the users understand themselves, but behind the user behavior observable from web logs are layers of s...