1. Sociable - This neat plugin adds a configurable list of social bookmarking and social networking links that allow visitors to organize and share your content.

2. What Would Seth Godin Do - This is a plugin that actually cookies visitors and tracks who's new and who's returning. You can then craft welcome messages accordingly... See the welcome message at the beginning of this post for an example.

3. Viper's Video Quicktags - This plugin will help you easily embed videos onto your blog from Youtube, Google, Vimeo, Viddler, and other top video sharing communities.
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4. Tweetmeme - This is another "must have" plugin that allows visitors to re-tweet your content on Twitter. We saw an amazing 400% increase in traffic on one of our sites as a result of adding this plugin.

5. Tiny MCE Advanced - This plugin gives you 'Microsoft Word-like' functions when writing your posts... Very helpful when it comes to paragraph spacing, font size, and other various typing features.
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6. Comment Re-Direct - You can direct first time commenters to a page of your choice thanking them for their support and feedback... Great for relationship building!

7. Commentluv - This is the plugin you see on my post here that showcases commenters latest blog posts with a little heart icon. It helps drive traffic back to your commenters' sites and encourages more people to want to comment on your blog!

8. Askimet - This plugin eliminates most of the comment spam issues. A "must have" component for any blog.

9. Google Analyticator - This plugin places your Google Analytics tracking code on your entire WordPress blog. Tracking is ESSENTIAL, so make sure you get a free Analytics account and install this plugin.

10. WP Related Posts ~ This is a plugin that lists related posts down below each blog post... Very helpful in encouraging multiple post reading!

11. WP Super Cache ~ The more plugins you install, the slower your blog load time will get... So this plugin will help speed up the load time of your blog.

Yours in Knowledge,