[EDIT] Thanks for the catch, the date was wrong. Links remain same, but the date changed.
10 Rules for your Small Business Website: Having worked for a small business for some time and with WordPress being such a widely used tool for building small business websites, I think most of these are well thought out and make a lot of sense. My ex-employers website violates almost every rule mentioned.
Spotback provides you with a small script to embed on your posts to provide centralized and socialized ranking for almost anything. Visitors will also receive personalized referrals and recommendations from your site or blog. No WordPress plugin available but I am sure the plugin programmers out there can whip something up quite easily with the WordPress hooks available.
Perils of Problogging ia points out the Perils of “Problogging” and when I was notified of the entry, I almost felt like I was being singled out. Food for thought.
JS-Kit is another centralized ratings widget with commenting built in. Not sure how the commenting would help WordPress bloggers but the ratings widgets are quite nice. However, the commenting/ratings widget might be used for static HTML pages quite conveniently and since JS-Kit uses Akismet to mitigate Spam, comments are bound to be spam free.
Amatomu and Afrigator are Two African blog aggregators with a variety of feed and channel features built in. I was pleasantly surprised to see the volume and quality of blogging activity going on in that subcontinent.