"CSS+JavaScript has the same exact problem" I don't have anything but anecdotal data to back this up, which is a huge caveat. Please feel free to knock this do

"CSS+JavaScript has the same exact problem" I don't have anything but anecdotal data to back this up, which is a huge caveat. Please feel free to knock this down. But I have to ask: have we seen as much improvement in Flash performance as we have in plain old browser performance? Browsers are improving by leaps and bounds. I'm skeptical that Flash has had a similar performance renaissance. For one thing, who've they had to compete with until recently? Browser vendors are tripping over one another to improve speed. Until HTML5, you were out of luck for rich content if you didn't want to use Flash. Now, I agree that eliminating Flash won't solve ads in one stroke of JS. Even so, moving that stuff out of Flash (which browser vendors have little control over) into the browser itself enables vendors to improve whatever performance-troubled cases that HTML5 ads provide. And, most importantly, improving HTML5 performance, ads or no, is a win across the board, IMO. A faster browser means faster ads AND apps.