I, and I'm sure every single user of the Drupal.org website would enormously benefit from a single-line 200 character description of what a contributed module/theme does. I appreciate this would take a lot of effort perhaps, but would make finding modules and identifying what they do much easier.
HTMLPurify: Utilises htmlpurifier lib http://htmlpurifier.org/ to tidy all Drupal output HTML
HTMLTidy: Utilises HTML_Tidy to tidy all Drupal output HTML
IconFonts: Extends @font-your-face to allow for inclusion of Icon Fonts on the site