The Sermon Browser – This is a very nice plugin tool that allows a church to upload a sermon to their WordPress site. This also catalogues and makes the sermon easily searchable and ready to download from the server for people to listen to.

WordPress Sermons – This is another great plugin for churches which have sermons that are recorded into MP3 format to upload and share to anyone that wishes to enjoy the sermon from home.

Digg Widget – This is a very nice plugin that is designed to display the last 10 posts that have been sent to Digg by readers. This is very useful for blogs with plenty of information in many different posts.

Digg Protector – This is a special plugin to produce the opposite effect of what Digg is for. It protects your blog from server overload when your post has been Dugg.

WP Conditional Digg This Badge – This is a special plugin that allows a Digg badge to be displayed on your posts that have already been Dugg. This is very useful to prevent showing low number Digg counts on your posts if they have not met a certain amount yet.

Digg Digg – This is a very useful plugin that integrates a large amount of social bookmarking website icons including the Digg site on your page for easy sharing by others.

Digg Integrate – This is a very simple plugin that allows you to add a “Digg this” button on your post with a simple interface. Very easy to use and is useful to get many extra readers if your posts are Dugg.

Anti Virus – This is a useful plugin to help protect your blog from spammers and virus infections. It detects permalink backdoor viruses and much more. You can even run a manual virus test with instant results.

Paranoid 911 – This is a very useful plugin that is designed to warn you of any changes made to your blog without your consent. It helps to prevent hackers and virus infections from doing too much damage to your WordPress blog.

Spam Bam – This is a useful tool to prevent spammers from abusing your comments. This is also useful as well to prevent unnecessary posts from spamming bots that will post links and exploits where viruses could take over your blog reader’s computers.

WP Security Scan – This is a very useful plugin that is designed to help scan and find any and all vulnerabilities in your WordPress blog installation. It is very useful in helping to correct the issues and makes it possible to prevent hacking and virus attacks as well.

Blogroll Auto Linker – This great tool is useful in making it possible to easily link to another site in your posts by using your blogroll. This also allows you to use the auto link feature with smart tags by putting the name of the blog in brackets.

Blogroll Links – This is another great plugin that features the ability to quickly and easily manage your links to other websites through the blogroll. This is useful for linking to friends or other blogs that you use.

Blogroll to Google CSE – This is a great tool if you will be linking to permalinks. It easily creates a database and custom search engine that runs off of Google and lists your links first.

Blogroll Fun – Show Last Post and Update Time – This is a great tool that can help you show your readers the last post time and update time. This can be very helpful when readers want to go to pages that are actually updated every so often.

Auto Blogroll – This is a simple tool to create and manage a blogroll for link building. It is a great plugin that simplifies everything for you and makes it possible to link to any website or post.

WP Classified – This is a simple plugin that is designed to make classified listings which can be displayed on a separate page. Can be stylized with several great formatting and makes for a very nice addition to the WordPress blog.

Another WordPress Classifieds Plugin – As the name implies, this is another WordPress classifieds plugin that can be customized in several ways. This plugin comes complete and places classifieds easily.

Social Engine Last Public Classifieds – This is the social engine plugin to show the last public classifieds. This application is not free to use and requires a subscription to their service.

Classifieds Theme for WordPress – This is a great theme for WordPress that integrates all that you need to make your WordPress blog into a functional classifieds page with the ability to integrate several payment methods.

Edgeio Classifieds – This plugin allows you to create a classifieds’ section on your WordPress blog and offer free or even paid classifieds to your blog for others to take advantage of.

Geesee Chat – This is basically a chat client that is available to use with many different platforms including WordPress. It is very useful in keeping in touch with your readers and allowing them to talk with each other to discuss your writing.

WP Live Chat – This is a plugin that is basically an IRC engine. It allows users to chat over your website and supports many functions of the popular IRC chat engine.

Side Sparks Chat – This plugin allows you to communicate with your readers in real time. This makes it possible to do so with a self hosted WordPress installation.

Chat Catcher – This plugin allows you to post comments from social media services to your blog. It is a great tool to ensure that you get all of the praise for your blog as possible while moderating out the less flattering comments.

ooVoo Video Chat – This is a very nice chat application that makes it possible to have live video chats with other users. The great thing about it is that you can have up to 6 people connected via webcam and have focus groups or brainstorming sessions with readers!

Top Commentators Widget – This is a great plugin widget that allows you to display the top commentators on your WordPress blog site sidebar. This is a great way to help them get recognized if they have contributed a lot to your blog comments.

Top First Commentors – This plugin is designed to show the top first commentators on your WordPress site. The number is easily tracked by your WordPress blog automatically and placed on the sidebar for readers to view.

Comment Analysis – This plugin is more of a suite of tools able to track and monitor a large amount of comment statistics. Amongst this, you can also track the top commentators on your WordPress blog.

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JAW Popular Posts Widget – This plugin is a great addition to any website as it provides the ability to have a widget on the sidebar that provides links to your most popular blogs. This is very useful towards having an easy way to promote your best posts.

WordPress.com Popular Posts – This is a sidebar plugin that offers the ability to have the links to your most popular posts available to any and all readers who visit your WordPress blog.

Most Popular Posts – This is a sidebar widget that offers your popular posts within the sidebar. It is easy to implement by simply installing and turning it on for your sidebar.

Popular Posts – This is a plugin that has many customizable options to output your most popular blogs. This can be put anywhere on your page including the sidebar if needed.

WordPress Popular Posts – This widget allows you to place a list of popular posts in the sidebar and can be formatted by the WordPress blog owner to work as they wish.

Google XML Sitemaps – This plugin is designed to create special XML sitemaps that can be easily indexed by many different search engines. This helps to maintain a much better method for search engines to catalogue every page of your site.

Really Simple Sitemap – This is a very simple sitemap generator that creates the links in an easy to find and index format for most search engines.

Google Sitemaps – Append UTW Tags – This plugin is designed to be used in conjunction with the Ultimate Tag Warrior plugin and appends the tags onto the sitemap links for better indexing of your WordPress blog site.

Karailiev’s Sitemap – This is a plugin that specializes in making XML sitemaps and news sitemaps for your website for better Google and other search engine indexing of your website.

Dragon Design Sitemap Generator – This is a sitemap generating plugin that has support for multiple levels, permalinks and so much more and is highly customizable as a “true sitemap generator”.

Paginated Comments – This plugin is designed to allow you to break up your comments into pages that are designed with search engine optimization in mind. It is a very powerful tool for blogs with large amounts of comments on their posts.

Paginator – This is a very neat plugin that is designed to allow you to scroll through pages with the paginator3000 navigation system. It optimizes the ability to scroll through the WordPress blog.

Category Pagination Fix – This fixes an important issue with pagination in the WordPress 2.7 installation that makes the pagination of pages return 404 not found messages by fixing the links once they are created.

Styled Pagination – This plugin allows you to add images and more to the pagination process of your WordPress blog. This is very useful in creating more aesthetically pleasing blog pagination.

Proper Pagination – This is a very flexible tool for WordPress blog developers that allows for the ability to add several functions such as archive, category, search tags and much more.

Custom Pagination – This is a very nice plugin that allows you to set images for the next and last page pages of your WordPress blog. Was developed for use with dating sites but is very useful for many other uses!

WP Paginate – Increases the navigation possibilities of your WordPress blog and is very useful to help readers get where they want to be on your site. It is very flexible and can also paginate comment sections.