Permanent Web Markers: What's your biggest internet regret?

This is not the kind of moment your name associated with. Thanks internet, for ruining our lives. (ThinkStock Images)This is not the kind of moment your name associated with. Thanks internet, for ruining …
In the past, people changed their names to become famous. In the future, we'll be changing our names to avoid the public eye. That's what Google honcho Eric Schmidt predicts for our kids and grand-kids. Already the internet has become a database of contact information, work history and personal memories for millions. It's also a catalog of personal foibles. We can untag the photo of us on Facebook with the hookah in our mouth, or de-friend the guy we dated during a spasm of loneliness. But we'll never get rid of that fan letter to Brad Garrett, that "online diary" entry about how we hate our love handles, or that cached photo that comes up first of our dance-floor face-plant. Are we not allowed to make mistakes, to evolve an become better people? How about the people who ranted about their boss as an intern--and have to cross their fingers no one searches them before every job for the rest of their lives? Or those bosses who've been slandered publicly for all internet-ernity? Shudder.

So, what's your biggest internet regret? What do you wish you deleted, untagged, or spiked when you still had the chance? What comes up when you google yourself that makes you cringe every single time?