YouTube™ use Flash Player extension - Opera add-ons
Adobe Shockwave Flash player shows error screen on youtube player(Firefox) - Ask Ubuntu
How to Update Adobe Flash Player in Google Chrome - YouTube
Petition · Bring back Adobe Flash Player support for Youtube instead the built in HTML5. · Change.org
YouTube™ All Flash® Player extension - Opera add-ons
Watching YouTube without Adobe Flash - YouTube
How to Run Adobe Flash Player on Windows 7 : Using Windows 7 - YouTube
How to Enable Adobe Flash Player on Chrome - YouTube
FIX: This site uses a plugin (Adobe Flash Player) that will soon be unsupported - Could not load Shockwave flash in Chrome (Solved) - wintips.org - Windows Tips & How-tos
Adobe Flash Player is officially dead. Here's how to uninstall it | CNN Business
Watch YouTube on Your Computer With HTML5 instead of Flash
how to set Youtube default to use Adobe Flash player - fixing weird problem with youtube displaying videos using HTML5 - ☩ Walking in Light with Christ - Faith, Computing, Diary
Adobe flash player is required to display some elements on this page ( Youtube Video playback) - YouTube