Good news!
Unfortunately, what OneGuy67 said is very real... Even if you take something down from Facebook, Twitter, your blog, etc, it is perpetually archived in a data-mining server somewhere and it WILL be found if someone is willing to look deep enough.
This means Joe Shmoe may have some explainin' to do when it comes time for a security clearance, a new job, or maybe even that big day to meet your future in-laws (like in Meet the Parents [LOL]).

