Have you heard this term? I saw it in a Yahoo article about the new Google Personal History Feature:

Mountain View-based Google believes the service has adequately addressed privacy concerns, although Mayer conceded people who share a computer might not want to use the service. “This isn’t for someone who is particularly sloppy about signing in and signing off,” she said. “You have to have very good computer hygiene to use this.”

I did a Google search and found a pretty thorough explanation of the term.

Apparently this term isn’t even that new. I guess I’m kinda out of it.