I have installed quite a few wordpress plugins in the last 3 months to keep this blog running. I would strongly recommend these plugins to any blogger and they might be useful for the new blogger.
Add Meta Tags
Add Meta Tags plugin adds the description and keywords XHTML META tags to your blogÃ¢â‚¬â„¢s front page and to each one of the posts, static pages and category archives. The plugin can be set to add description or keywords automatically to each post or you can these to each post while creating the post from custom fields.
Ad Rotator plugin allows you to rotate banner ads randomly at a specified location in your blog.
Better Comments Manger
Better Comments Manager is an extension of the default WordPress comments manager. It will allow you to reply to your blog comments from the wordpress admin panel.
Comment relish plugin sends an e-mail message to users who comment on your website who have never commented before. The message can be customized within the pluginÃ¢â‚¬â„¢s preferences.
Feedburner Feed Replacement
Feedburner Feed Replacement plugin simply forwards all your feed traffic to FeedBurner. The plugin will detect all ways to access your feed (e.g. http://www.yoursite.com/feed/ or http://www.yoursite.com/wp-rss2.php, etc.), and redirect them to your FeedBurner feed so you can track every possible subscriber. It will forward for your main posts feed, and optionally your main comments feed as well.
Google Sitemaps plugin generates a XML-Sitemap compliant sitemap of your WordPress blog. This format is supported by Google, YAHOO and MSN Search.
IImage Browser plugin makes easier to add images to your posts, you can upload images via a form, navigate through sub directories and create thumbnails for large images. With one click you can add the image code to your post.
Mighty Adsense plugin allow you to add Google adsense ads to your posts or pages with out modifying the templates.
MyAvatars Plugin shows mybloglog user avatars in comments
Random Redirect Plugin adds a stumbleupon like functionality to your blog. When a visitor clicks the random post link it displays a random post from your blog.
Related Posts pluign shows a series of related entries based on keyword matching.
Secure and Accessible PHP Contact Form
Secure and Accessible PHP Contact Form plugin is useful for adding anti-spam and secure contact form for your blog. You can customize the plugin easily with options.
Share This plugin will make it easier for your visitors to share your articles on social networking sites. Supports e-mail and posting to social bookmarking sites.
Show Top Commentators
Show Top Commentatros plugin shows a list of top commentors on your blog with a link to their own site. This plugin is useful for encouraging comments on your blog.
Sphere Related Content Widget:
Sphere Related Content Widget connects with an icon link at the end of your blog posts. When a reader clicks on the icon link, we find blog and media articles related to your blog posts.
Subscribe To Comments
Subscribe to Comments is a plugin that allows commenters on your blog to check a box before commenting and get e-mail notification of further comments.
Ultimate Tag Warrior:
Ultimate Tag Warrior Plugin allows to add relevant tags to your posts and coverts all categories as tags. With a simple markup you can convert any word in your post as a tag, making it easy for visitors to find posts related to a word or tag. You can display a nice tag cloud on your blog to give an idea to your visitors what your blog is about.
What Would Seth Godin Do: