[…] I was willing to put CSS to work in place of tables to handle the heavy lifting of layout.
I feel the same way now about responsive web design. Designing a fixed layout just doesn’t make sense anymore. The wide variety of viewport sizes from a wide variety of devices means that assuming a baseline screen size of 800 pixels or 1024 pixels just isn’t tenable anymore.
An excellent (and thorough) post from the always-great Shawn Blanc. I would disagree with the following though:
Your email inbox is bi-directional: items come in and sit there until you volley them back. Your RSS inbox is uni-directional: items come in, stop at the inbox, and sit there until you file them away. Twitter, however, is an amalgamation of both.
I would argue that email is also an amalgamation of both. I’d wager that most people have at least one daily (or near-daily) subscription email, or something which is from a do-not-reply address.
Otherwise, Blanc’s article is thorough and backed by surveys and data. Really well researched.