This is really nice to have footnotes just next to the line there are called from[0]. I rarely stumble upon a web page that actually improves on the paper format but this one does. [0] There must be a better way to phrase this.
I wish Amazon's ebook reader showed the footnotes in margin as his blog does. They weren't even shown on the same page.
Instead you had to follow a hyperlink to the last appendix of the book. You could then read the footnote w/o the original context; then you click a "back button" to get back to the text.
I hope more ebook readers find a use for the gigantic margins on widescreen displays. -- I would've preferred marginalized sidenotes over seeing two pages[1] of content.
[0]: http://www.amazon.com/And-Then-Thought-Was-Fish-ebook/dp/B00... [1]: This is what Amazon's "kindle cloud reader" does when you maximize it on a 1080p display.