Interesting idea for an extension, trouble is the features are things most people (99.9%) can do without and do without because they don't need them. I installed it and tested it, uninstalled it reinstalled it several times and I found nothing different about having it installed or not installed (when it comes to you-tube) that would make this even remotely useful for most users . Some of the features I guess somebody somewhere may want to use but I don't see why any regular user would use this one. It is simply just not useful enough. In my testing nothing about this extension "ENHANCED" my you-tube experience. There was NO DIFFERENCE in you-tube with or without it. Great concept but I would give this one a pass.