Mine? It sucks. I've noted that the 4-hour limit is pretty accurate for actual focused work, but I've drifted into some areas (technical translation) that don't always need a lot of focus.
Yeah, same for me with Chrome. Irritating, isn't it. The site seems poorly designed. I can see a Flashblock icon in the top left so I know what's broken, but I can't click on the Flashblock icon to enable the content, as it won't take focus. Despite being interested in the topic I didn't dig deeper, so they lose a reader.
Of course it's not a good thing... If you want to hack on your system only to find out that it's all been prepackaged and filled with bells and whistles that can't be removed, there ain't much hacking you can do!
what's your "Time and attention management" like?