Here are the first ten, and there is a pdf report available at the end of this post where you can read all 50:
1. Make the videos viral, and spread them to as many websites as possible.
2. Use other social media sites like Twitter and Digg to post your videos.
3. Create well thought out, professional style videos that are edited properly.
4. Make sure the sound on your videos is clear and mixed and edited well so users can clearly hear it.
5. Keep content funny, engaging, and informative so viewers will watch it from beginning to end.
6. Try to keep the videos you create clean without too much controversial material.
7. Embed your logo and website into the video somehow. You can do this with text at the end or beginning, or by including your logo or URL throughout the entire video.
8. Have goals for your YouTube videos, but remember that there are thousands of videos on the site, and some have millions of hits while others only have a couple hundred. Set realistic goals.
9. Make sure you have good camera and editing equipment which is available in even many of the small recorders. If you don’t want to sink the money into these things, consider hiring a professional or calling the film department of your local college.
10. Keep the resolution of the video as high as possible, so it’s as clear as it can be.