Here’s my suggestions for a great set of WordPress plugins. The descriptions provided here are from the plug-ins themselves, and the links go to the plugin page on WordPress.org. You can also go to your ‘Plugins’ area in your WordPress dashboard to search for and install any of the below plugins easily.
Bad Behavior – Deny automated spambots access to your PHP-based Web site.
Contextual Related Posts – Show user defined number of contextually related posts.
Fast Secure Contact Form – Fast Secure Contact Form for WordPress. The contact form lets your visitors send you a quick E-mail message. Super customizable with a multi-form feature, optional extra fields, and an option to redirect visitors to any URL after the message is sent. Includes CAPTCHA and Akismet support to block all common spammer tactics. Spam is no longer a problem.
Fluency Admin – Give your WordPress admin the Fluency look, Fluency 2.4 is the latest update and is compatible with WP 3.1.x.
Google XML Sitemaps – This plugin will generate a special XML sitemap which will help search engines like Google, Yahoo, Bing and Ask.com to better index your blog.
Jetpack by WordPress.com – Bring the power of the WordPress.com cloud to your self-hosted WordPress. Jetpack enables you to connect your blog to a WordPress.com account to use the powerful features normally only available to WordPress.com users.
Simple Facebook Connect – Simple Facebook Connect is a series of plugins that let you add any sort of Facebook Connect functionality you like to a WordPress blog.
Simple Twitter Connect – Makes it easy for your site to use Twitter, in a wholly modular way.
WP-PageNavi – Adds a more advanced paging navigation to your WordPress blog
What plugins do you use on your WordPress-powered blog? Have any to recommend? Are you a plugin author and want to “plug” your plugin? :) Please feel free to leave a comment below!