> Wouldn't that make you think that we should revisit the sidebar
No.
The sidebar works and is effective when there's significant horizontal space, such as on a desktop screen with ample horizontal space. It just does not work when horizontal space is a premium, as is the case on smartphones (which generally barely fit a standard typographic line length at readable size in portrait)
Sidebars don't add anything necessary to the user experience. It's just clutter. If there's enough horizontal space, I suggest using columns instead, they fit the purpose better.
> Sidebars don't add anything necessary to the user experience. It's just clutter.
This is a really weird argument; sidebars are preferable to a lot of other patterns depending on the site and doesn't at all mean the content is less important than anything else on the page.
Can't tell if you're trolling at this point or if we're both misunderstanding each other. http://store.apple.com/us, the iTunes store and the App Store all rely heavily on sidebar navigation. Vertical content containers save space in addition to giving the user an area of the page that is generally relevant to what they're on the site for (shopping carts, advanced search, related content/archives, account information) without needlessly cluttering the more important horizontal space.
Neither. It's just that different things needs different design approaches. An online store has nothing in common with a presentation site. Just like a real store needs shelves, an online store needs to group the information somehow. Sidebars aren't the only way to group information. I bet Apple will redesign its online store in the near future.
As many people, I find a long text (like a blog post sometimes is) easiest to read if it is about ~80 characters wide. My laptop has a 16:9 display, and I usually have my browser in full-screen mode with tabs in a sidebar on the left. This leaves plenty of space for a website to put a sidebar and text side by side, so I don't really mind it on the desktop.
Obviously, if the sidebar does not add much (like on many blogs), I wouldn't mind if it goes away entirely.
edit: Columns seem to be problematic when there is no well-defined "end-of-page", as on paper.
No.
The sidebar works and is effective when there's significant horizontal space, such as on a desktop screen with ample horizontal space. It just does not work when horizontal space is a premium, as is the case on smartphones (which generally barely fit a standard typographic line length at readable size in portrait)