Broken Link Checker Wordpress Plugin This plugin will check your posts, comments and other content for broken links and missing images, and notify you if any are found.
Disable Comments Wordpress Plugin Allows administrators to globally disable comments on their site. Comments can be disabled according to post type. Multisite friendly.
WP-Optimize Wordpress Plugin Simple but effective plugin allows you to extensively clean up your WordPress database and optimize it without doing manual queries.
SI CAPTCHA Anti-Spam Wordpress Plugin Adds CAPTCHA anti-spam methods to WordPress on the forms for comments, registration, lost password, login, or all.
Facebook Wordpress Plugin Add Facebook social plugins and the ability to publish new posts to a Facebook Timeline or Facebook Page. Official Facebook plugin.
Xhanch - My Twitter Wordpress Plugin The best plugin to display your latest tweets, replies, direct messages, retweets, auto and manual tweet and lots more. Support multiple accounts
SEO Smart Links Wordpress Plugin SEO Smart Links provides automatic SEO benefits for your site in addition to custom keyword lists, nofollow and much more.
CommentLuv Wordpress Plugin Reward your readers by automatically placing a link to their last blog post at the end of their comment. Encourage a community and discover new posts.
WP-SpamFree Anti-Spam Wordpress Plugin Powerful anti-spam plugin that eliminates blog comment spam. Finally, you can enjoy a spam-free WordPress blog! Includes contact form.