OS X Lion: Deleted user account reappears; or, cannot use automatic login for a certain user account. I have never had this issue. I guess it is more common when people use Migration Assistant.
Cloud Storage vs. USB Drives, Portable USB Flash Drive Data Storage Premium USB Blog. I was thinking today how often I have been reading that people are using things like DropBox/Mozy/Google documents more than USB/external hard drives. This gives you some good pros/cons why you might choose one over the other.
Some of the tips are in dispute in the comments section below this article. The first tip about not deleting your photos on the camera for example. So take the suggestions with a grain of salt.