Once you post something on Facebook or Twitter, it's out there permanently. Facebook doesn't care that you were hammered when you wrote it. There are no second chances in the digital age.
--If you have a bad habit of social networking under the influence, a new web app could REALLY help you out. It's called the Social Media Sobriety Test, and it's a free plugin for the Firefox web browser. (--If you don't know what that is, you don't have it.)
--With the app, before you go out for the night, you tell it to lock you out of sites like Facebook and Twitter for a certain number of hours. And during those hours, the only way you can post is to pass a sobriety test, like typing the alphabet backwards.