Gamechanging! Rated 5 out of 5 stars
5 star reviews should be rare and this one earns it for making a radical change. The truth is the world will be a far better place when HTML5 replaces Flash and this add-on will help to bridge that process.
It is true that it may not be able to switch ALL videos- but the ability to switch a majority of them is RADICAL!
I tested it out by blocking Flash and then pulling up a bunch of Youtube tabs. The first one didn't work but I didn't panic. I then moved on to several more and they all DID work. I then pulled up several more just to be sure and all of those switched too. That was a good success ratio.
The bottom line: This is a big improvement!