The usability error you don’t know you’re making
By Dr. David Travis (@userfocus) over at User Focus articles. In a nutshell: be careful about the words you’re using and some of the other things that you might take for granted (e.g., clicking on the logo to go “home” on your site). These things may be obvious to you but might completely miss your target audience. Also: worth it for the phrase “jargon in-breeding” alone.