https://wpbtips.wordpress.com/ Update December 2012: The list below is obsolete, as WP changed many of the themes. To make their appearance more uniform, they say… In the majority of themes, posts on category or other archive pages show up just as they do on the main posts page. But in some themes only the beginnings of … Continue reading
https://wpbtips.wordpress.com/ Update Oct.+Dec. 09: post obsolete (except tip at the end) – now almost all themes feature previous/next navigation links on gallery attachment pages.