I think the challenge with Facebook, is that a large number of people using it don't understand what they are sharing. What they share about themselves is really none of my business. What I do need to be mindful of is:<p>A lot of people, including those who get paid to work in IT roles and are supposedly of a technical mindset, don't understand what information they are sharing about themselves and their friends when they interact with FB applications<p>This is different from real life, where most people will evaluate what they share about you with 3rd parties. In the case of FB applications, many people don't understand what is happening, and thus the evaluation phase is completely bypassed. Even if you would put your life in somebodies hands in the real world, you have to apply a different set of criteria to that same person / decision in the virtual world.