6 - Kristi Starling

The feature we chose to focus on for project 3 was how YouTube handles saving videos to view at a later time.  The user's mental model is that they click a button and then the video is stored in a place where it can be easily viewed later.  They are "saving" or "bookmarking" the video, similar to how you would save a Word document or bookmark or highlight a passage in a book.  They have a video to be viewed at a later time, and they are setting it apart to be able to do so.

This mental model is likely not far from what the implementation model would actually be.  The key differences from the programmers' perspective is that the videos are stored to a user profile, not a location on the site, and that the videos themselves are not stored, but rather a link to the place where the video is stored.