I noticed that search engine results are not arranged according to date or the latest information on the subject.
For example, "latest iphone" search will give you links to information on iphone releases. But the links are not arranged by date they were posted.
The first link will take you to 2005 release while the second link will take you to tomorrow's release.
With this issue, you might get an information that is old and dead, when a new information already exists.
For those of us who use desktop computers often, we have noticed that arranging information accoding to date it was put on the computer is relevant.
This issue I have also noticed on youtube. Youtube results are probably arranged according to views or some other criteria,
and not by how recent the video was posted. Therefore you might watch a video that gives you an old information when the new information already exists.
I believe that making it possible to view results according to the latest information might be useful, especially for students and technology buyers.