PUBLIC MARKS with tag user

Standard news readers organize feeds into groups, and then under each feed are items. If there's an unread item in a feed, the feed's name is bold. If you leave the cursor on an item long enough the feed name goes un-bold. These programs work much like mail readers, so much so that they are sometimes even integrated into mail readers.

the concept of "river of news" origin

User Centered-Design (UCD) is a philosophy and a process. It is a philosophy that places the person (as opposed to the 'thing') at the center; it is a process that focuses on cognitive factors (such as perception, memory, learning, problem-solving, etc.) as they come into play during peoples' interactions with things.