People never ask me ‘Hey Norman - what modules have you installed thus far on this wonderful Drupal 7 powered blog ?’
Archive - monthly archives.
Disqus - although I had some problems with this module so I am currently using a simple Disqus block.
Global Redirect - ensures that ‘node/1234’ is redirected to ‘2010/21/22/blog-post’.
Google Analytics - mandatory to torment myself over visitors statistics using GA.
Markdown Filter - although I haven’t fully embraced this yet. Old (raw HTML) habits die hard.
Pathauto - to map Drupal nodes to my date based permalink structure.
Token - required by Pathauto
XML sitemap - produces search engine friendly sitemap.
I also modified the ‘page.tpl.php’ template to reinstate my wonderful, award winning rotating tagline (or slogan in Drupal terminology).
Curiously, I haven’t enabled the D7 core ‘blog’ module as I don’t need multi-user blogs. Each post is simply an ‘Article’.