Tweetable is a WordPress Plugin intended to help integrate Twitter into your blog. It can tweet your blog posts as they are published, shortening the URLs with either Tr.im or Is.gd and optionally including Google Analytics campaign tags. You can display your latest tweet(s) in your blog sidebar with a customizable widget, which can even display your follower count.

Tweetable adds functions that turn the WordPress admin into a twitter client. The Tweet screen lets you update your status and browse your friends’. The Track page let’s you save keywords to be searched so you can keep an eye on what Twitter as a whole is saying about a given topic. You can set the minimum user level required to access the menus if you would like to allow other authors access.

Pricing: Free
Requirements: WordPress 2.7+
Source: http://www.webmaster-source.com/tweetable-twitter-plugin-wordpress/

Platinum SEO Plugin is the ultimate wordpress SEO solution.Platinum SEO Plugin offers all the features of All in One SEO plugin plus more. Platinum provide an ultimate onsite SEO (search engine optimization) solution for wordpress blogs. If you are already using All In One SEO Pack, this plugin will automatically import all the settings, that you have defined using All in one SEO plugin. You can check out the features of Platinum SEO Plugin:

• Optimized Post and Page Titles for search engines
• Generates all SEO relevant META tags automatically
• Helps you avoid duplicate content
• Lets you override any title and set any META description and META keywords, for any post or page
• Compatible with most other plugins, like Auto Meta, Ultimate Tag Warrior and others.However you may have to disable All in One SEO pack
• You don’t have to fear changing permalinks. If you are not satisfied with the current permalink, change it through Settings–>Permalinks in your admin panel, without worrying about loss of Page rank or google penalty.Platinum SEO plugin will take care of issuing a 301 redirect to the new location.This is a new essential feature, not present in All in one SEO
• Add index, noindex, follow or nofollow, noarchive, nosnippet, noodp, noydir meta tags to any post/page.These options are not available in All in one SEO Pack.

Pricing: Free
Requirements: WordPress 1.5+
Source: http://wordpress.org/extend/plugins/platinum-seo-pack/

What Others Are Saying allows you to display the most recent post of your favourite blogs somewhere on your site. It utilises the RSS link field from the blogroll for each of your links. If the RSS link exists it attempts to get the last post from it. It then displays the most recent X number of posts depending on your settings. Each blog can have one post in the list.

Pricing: Free
Requirements: Wordpress 2.0.7+
Source: http://www.stuffbysarah.net/blog/wordpress-plugins/what-others-are-saying/

Google (XML) Sitemaps Generator plugin generates a XML-Sitemap compliant sitemap of your WordPress blog. This format is supported by Ask.com, Google, YAHOO and MSN Search.

Pricing: Free
Requirements: Wordpress 1.5+
Source: http://www.arnebrachhold.de/projects/wordpress-plugins/google-xml…

For the best results using FeedBurner with your self-hosted WordPress site, we recommend the FeedBurner FeedSmith plugin (originally authored by the awesome Steve Smith). 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 (more…)

SEO Smart Links provides automatic SEO benefits for your site in addition to custom keyword lists, nofollow and much more. SEO Smart Links can automatically link keywords and phrases in your posts and comments with corresponding posts, pages, categories and tags on your blog.

Further SEO Smart links allows you to set up your own keywords and set of matching URLs. Finally SEO Smart links allows you to set nofollow attribute and open links in new window. Everything happens completely transparent, and you can edit the options from the administration settings panel.

Pricing: Free
Requirements: WordPress 2.7
Source: http://wordpress.org/extend/plugins/seo-automatic-links/

Sociable automatically add links to your favorite social bookmarking sites on your posts, pages and in your RSS feed. You can choose from 99 different social bookmarking sites (including Digg, Delicious, Facebook, Mixx, Sphinn and a lot more). It has nofollowed attribute on all links.

Pricing: Free
Requirements: WordPress 2.6+
Source: http://wordpress.org/extend/plugins/sociable/

Contact Form 7 is just another contact form plugin. Simple but flexible. It can manage multiple contact forms, plus you can customize the form and the mail contents flexibly with simple markup. The form supports Ajax-powered submitting, CAPTCHA, Akismet spam filtering and so on. You should also look at cform which is offering convenient deployment of multiple contact forms throughout your blog as well.

Pricing: Free
Requirements: WordPress 2.5+
Source: http://wordpress.org/extend/plugins/contact-form-7/

The dotMobi WordPress Mobile Pack is a complete toolkit from dotMobi to help mobilize your WordPress site and blog. It includes a mobile switcher to select themes based on the type of user that is visiting the site, a selection of mobile themes, extra widgets, device adaptation and a mobile administration panel to allow users to edit the site or write new posts when out and about.

The pack has been tested on WordPress 2.5, 2.6, and 2.7. Please note that the plugin requires you to be running WordPress on PHP v5.0 or greater.

Pricing: Free
Requirements: WordPress 2.5+
Source: http://mobiforge.com/running/story/the-dotmobi-wordpress-mobile-pack

Sometimes, links get broken. Most likely many of your blog posts contain links. It is almost inevitable that over time some of them will lead to a “404 Not Found” error page. Obviously you don’t want your readers to be annoyed by clicking a link that leads nowhere. You can check the links yourself but that might be quite a task if you have a lot of posts. You could use your webserver’s stats but that only works for local links.

Broken Link Checker is a plugin for WordPress that will check your posts (and pages), looking for broken links, and notifies you on the Dashboard if any problems are found. By default all old posts/links are re-checked every 72 hours, or you can set a different time period.

There are several buttons for each broken link - “Details” shows more info about why the link is considered “broken”, “Edit Post” does exactly what it says and “Discard” will remove the message about a broken link, but not the link itself (so it will show up again later unless you fix it). Use “Unlink” to actually remove the link from the post. If references to missing images are found, they will be listed along with the links, with “[image]” in place of link text.

Pricing: Free
Requirements: WordPress 2.0.2+
Source: http://wordpress.org/extend/plugins/broken-link-checker/

Featured Content Gallery is a WordPress plugin that creates an automated rotating image gallery of your posts or pages for use anywhere within your theme.

Completely customizable, the Featured Content Gallery is very easy to integrate. Choose to automate the plugin and simply add a custom field to each post or page you want to display and the gallery will show the image, an auto-generated thumbnail in the upper carousel, and the title and first few lines of page/post text. Advanced options allow inclusion of custom thumbnail images, custom text, and custom gallery styles and transitions.

Pricing: Free
Requirements: WordPress 2.7+
Source: http://www.featuredcontentgallery.com/

FlippingBook Wordpress Gallery is an excellent way of working with images in blogs. You download photos, and the plugin creates a small photo gallery out of them. If you need to post several pictures, you don’t have to make large posts. Being joint together, pictures can be put in a beautiful album-book and don’t take up much space.

It’s very convenient to look through the pictures, leafing through the pages. You just have to double-click to print images out. This is a real interactive book which is nice and easy to use when you turn its pages.

Pricing: €0 - €299
Requirements: WordPress 2.5+
Source: http://pageflipgallery.com/