I lost a bunch of digital photos. "That's okay," I thought, "I've backed them all up online. Oh wait, the photos aren't there either." So I called the backup service to find out why.
Tech support: What's the problem?
Me: My photos are gone from the online backup, too.
Tech support: Did you unplug the external drive?
Me: Well, yeah.
Tech support: Wake up, crackhead! This is a
backup service, not an archiving service.