[pope52]

His comments on the difference between Twitter and Facebook are particularly interesting:

"Previously, developers took data out of Twitter and into the context of their own applications and services. The new design flips this on its head, bringing rich embedded content into the site from a host of brand-name web properties. (It’s worth noting that Facebook has done much the opposite: they started out with a very centralized build-it-within-our-walls model, then gradually grew their tendrils out into the web with Facebook Connect.)"

I'm curious how this relates to his later observation that "walled gardens" are doomed to fail. In both instances, the walls are being chipped away, but in the former, the content is being brought in, while in the latter, content is being let out.