Good example, but more often than not, there is no clear answer to the 'brain' part of the UI, because people don't think the same way, especially for non-standard UI elements. In Ryan's blog post itself, the following design choices can be questioned:
1. The balloon image just below the post title (and to the left of the number of comments) is not clickable. Should it be clickable? If so, should it lead to the comments section? Should it lead to the post-new-comment form?
2. To the right of the comment count, in the 'Latest by John Doe' part, again, no links. Even though 'John Doe' is a link in the original comment if he has a web page. If we linkify it, should both 'Latest' and 'John Doe' be links?
I am, of course, picking hairs like Ryan, but that's precisely the point - when you start picking hairs, there is more than one way to see it.
1. The balloon image just below the post title (and to the left of the number of comments) is not clickable. Should it be clickable? If so, should it lead to the comments section? Should it lead to the post-new-comment form?
2. To the right of the comment count, in the 'Latest by John Doe' part, again, no links. Even though 'John Doe' is a link in the original comment if he has a web page. If we linkify it, should both 'Latest' and 'John Doe' be links?
I am, of course, picking hairs like Ryan, but that's precisely the point - when you start picking hairs, there is more than one way to see it.