I'm one of the people who helped build one tiny part of this, and I think the coolest part of Redact is the fact that it makes it possible to clean up your social media history without totally nuking it from orbit. Early on, we thought that most people would use the service once to delete everything, and never touch it again or only use it once every few months or even years. We quickly found that a lot of people want to continue to use social media services and like retaining the contents of their social media and history of their lives, but want to clean up some things that don't reflect their current views or could cause issues today.