Seesu Media Streaming site
I cannot get one of my favourite services to work with any of the rendering engines, and Webkit seems to have a big problem with it, as the browser becomes unresponsive until I can finally close the tab.
The site works with my current IE8 installation, and my usual Opera 12.
I hoped to use it in Lunascape, as it does not require a plugin.
Once you try it, you will see why I want to use it with this browser.
It is designed to work on anything that can run flash (including mobile phones).
If you login with your Last.fm and VK.com details, it becomes even more useful.