If you’re on a Mac and use Safari, there’s this problem with Flash. Flash is dead, but some people haven’t realised yet, so it’s still quite widespread on the web. And that has an annoying influence on the experience of people who want to go non-Flash on the web (but I still recommend doing so, especially on a Mac).

Oh, funny page: isflashdeadyet.com.
However, the absolutely amazing YouTube5 extension makes it all better. It makes YouTube and Vimeo videos play in HTML5, as far as possible. In a way more beautiful player, way smoother, less stressful for your CPU. Gotta love this.
In some cases, however, the method of changing the Safari User Agent to ‘iPad’ may still help.

via DrDrang on Twitter, I think.