OH YEAH!! Because users are renowned for updating their browsers. Flash has 99% of the market. I would gather that 90% of users on the internet don't have a friggin' clue what this whole debate is about and wont care how they view their videos. I like the idea of HTML5, but if it takes off like many preach, users will probably notice how everything is a little less polished and a little more crappy. Then they'll still not care.