Background
I registered the domain http://millwoodonline.co.uk years ago and have had it running as a blog / test site since then. I have installed almost all the CMS and blog software available over the last few years. After the release of Drupal 6 I installed that and thought I would set it up as a Blog, this was more to play with Drupal 6 than to Blog.
Modules
Img_package
I have found this a great module for Blogs, if an image is added as an attachment this module adds the image inline on the post.
Lightbox2
The lightbox2 module works together with Img_package to allow full size pop-ups of the images.
Pathauto
This module changes the URL from millwoodonline.co.uk/node/19 to a more friendly URL like millwoodonline.co.uk/content/post_name, this makes the web site a lot more search engine friendly.
Service links
I have found my traffic has grown loads since I (and strangers) started adding my posts to Digg, the service links module adds all the social bookmarking links to the bottom of the post, thus making the posting to Digg a lot less stressful.
Mollom
Mollom which is currently in Beta tries to stop all the SPAM comments, so far so good.
The future