It is interesting to be a consumer and give input to companies and see how they react. I did write an email with suggestion to YouTube.com:

Date: Monday 3 sep 2007
To: @ youtube.com
Subject: idea and suggestion

Dear YouTube,
I think your doing a great work. I cannot find a solution how to not show other videos in on my website after the video is ending (not in your help center). The only solution is to have it in a smaller screen.
I will end up in copyright problems if I show other videos on my website, think it is better if they can go direct to youtube to see more videos (my webhost will not like the copyright problems if other videos are out on my website).
Thanks for good service and help with the above, answer so I can show the video in: width=425 height=350 and not yest in width=215 height=177.

Looking forward to here from youtube.
Best regards,
Stefan Engeseth
http://www.DetectiveMarketing.com ™

They did change it but a in the opposite way I suggested. Now they put the menu in the end of videos in every size of choise I have as a consumer. The result is that millions how choose the smaller window screen to not get the copyright problem, now get it. If they done the solution I suggested they would get more users and increased traffic.
It is off course hard to give feedback on for them. The point I pointed out for them however showed a weakness in the way they where working, and they fixed it (as the YouTube staff like to have it). But if they would listen more and develop and dialog we together could develop a better ONE solution.