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. It is one of the most popular WordPress plugins out there for the simple reason that it helps foster a community around your blog by encouraging commenters to come back and stay engaged in the dialog.

Features

• Rudimentary security
• Recognition of subscription status
• Themeable subscription manager
• Ability to let users change notification e-mail address
• Easy integration into comments form
• Subscription without leaving a comment
• Customization
• Internationalization

Pricing: Free
Requirements: WordPress 2.2+
Source: http://txfx.net/code/wordpress/subscribe-to-comments/

WordPress by default doesn’t come with any sort of web site reporting tools (and it really shouldn’t). So if you want to know how many people visited your site, which pages they viewed, or where they came from, you’ll need to either rely on your raw web logs or use an online tracking service provided by a third party.

Google Analytics and Feedburner Reports plugin for WordPress allows you to easily view your Google Analytics and Feedburner reports in your WordPress administration area. It adds a top-level Reports tab and when you click on it, you’ll get a quick 7 day overview of what’s going on with your site (pageviews, visits, referrers, etc). You’ll have to login to Google Analytics or Feedburner directly if you want more detailed stats.

Features:

• Provides you with a birds-eye view of what’s going on with your site
• Retrieves data from Google Analytics and Feedburner
• Reports are represented visually with graphs
• Choose the reports you want to view
• Ability to automatically install the Google Analytics tracking code for you, along with optional outbound link tracking.
• Includes a WordPress widget to display your most popular content.
• Automatically check for updates to the plugin

Pricing: Free
Requirements: -
Source: http://tantannoodles.com/toolkit/wordpress-reports/

FlickrRSS allows you to display Flickr photos on your weblog. The plugin supports user, public and group photostreams. It’s easy to setup and configure via an options panel. It also has support for an image cache located on your server. However, there is a limitation of using the RSS feed which only contains the most recent photos.

The plugin also supports a number of parameters, allowing you to have multiple instances across your site.

• $num_items – how many photos you want to appear
• $type – specify user, public or group photosream
• $tags – a comma separated list of tags (with no spaces)
• $imagesize – square, thumbnail, medium or large
• $before – html appearing before each photo
• $after – html appearing after each photo
• $userid – specify a user id (or group name)

Pricing: Free
Requirements: -
Source: http://eightface.com/wordpress/flickrrss/

Your readers can preview the comment before submitting. Ajax Comment Preview let you type in a comment and click “Preview”. The information you enter is sent back to the server via the snazzy XMLHttpRequest Javascript object. The server then decides how to format that information (where part of this decision is the filtration of the information through WordPress’ content filtration system – the real advantage of this method). The newly formatted information is then sent back to your browser where you can see exactly how your comment will look once you submit it.

If your browser doesn’t have all the clever bits necessary for all this, fear not. You can forego the comment previewing and just submit the comment as usual.

Pricing: Free
Requirements: WordPress 2.1+
Source: http://blogwaffe.com/ajax-comment-preview/

A gravatar, or globally recognized avatar, is quite simply an 80×80 pixel avatar image that follows you from weblog to weblog appearing beside your name when you comment on gravatar enabled sites. Avatars help identify your posts on web forums, so why not on weblogs?

Setting up gravatars on your weblog is easy, you don’t even need an account! Plugins are available for leading weblog software, and our tutorials will have you running gravatars in no time. To request a gravatar from our servers, you simply add an image to your comments area with an “src” attribute that points to our gravatar image generator and includes an MD5 hash of the commenter’s email address. Since all gravatars are rated with an MPAA style rating, you can restrict your site to show only gravatars whose content you are comfortable with.

Download WordPress Gravatar Plugin now.

Pricing: Free
Requirements: -
Source: http://site.gravatar.com/site/implement#section_2_2

Digg this wordpress plugin is a plugin that detects incoming links from Digg.com to your wordpress post and automatically display a link back to the digg post, for people to digg your story. When a digg is first recognized an email is sent to the site’s admin. The detection is based on the referrer URL, which has to come from digg.
In case there is more than one digg posts to your page, only the first one will be displayed.

Pricing: Free
Requirements: -
Source: http://www.aviransplace.com/index.php/digg-this…

WP Mailing List allow users/members to subscribe to your Wordpress mailinglist and send out mass newsletters to all subscribed members in your database.

A Wordpress sidebar widget is included, which uses Ajax technology to subscribe visitors/members to your mailing list without a single page refresh. It uses JavaScript XMLHttpRequest to communicate with a PHP backend and then receive an XML structured data response.

You have full control over several configuration settings such as the email format (text/html), automatically subscribing new registrations, etc…

Global variables in your newsletter message allows you to easily personalize newsletters by telling the script to automatically insert the first name, last name, email address, etc… of each subscriber into the newsletter message body.

Pricing: $24.99
Requirements: Wordpress 2.1+, SMTP Mail Server
Source: http://tribulant.com/products/view/1/wordpress…

WP-PageNavi adds a more advanced paging navigation your WordPress blog. You can have a page navigation bar with page numbers, previous page, next page, first and the last page button. You can also format the navigation bar easily with CSS.

Pricing: Free
Requirements: -
Source: http://lesterchan.net/wordpress/readme/wp-pagenavi.html

AdRotator displays an advertisement (which is randomly selected from a group of advertisements specified in a text file) at your chosen location. Tested on WordPress 1.5 & 2.x. Should work with earlier and later versions (future and past proofed). It can also be used with other CMS systems or anywhere where PHP is supported. AdRotator was created with few simple requirements.

• It should allow rotating (randomly) between any number of advertisements (or other code or images etc.)
• It should be efficient.
• It should be simple to use.
• It should be simple to install.
• It should be simple to uninstall.

Pricing: Free
Requirements: Wordpress 1.5+
Source: http://blog.taragana.com/index.php/archive/wordpress-plugin-adrotator…

Here is a list of the most important on-page ranking factors and how they are addressed by this All in One SEO plugin. You might want to visit Options – All in One SEO to tweak the default options.

Titles

The text that you see in your browser’s window bar is the most important thing *on* your page. Make sure your titles are getting rewritten and the important stuff (your post titles) always come before anything else. You can leave a few words from your blog title to do some branding but don’t overdo. If your post titles don’t contain your most precious phrases you want to rank for then tweak them. Leave the post titles as it is but change the meta title.

Descriptions

Once your pages rank in search engines your description (aside of course from your title) makes a potential visitor want to click through, or not. It’s mta descriptions, believed dead by many people, that decide over your site’s fate. If you don’t want to invest the time and write a description for every post at least let them be auto-generated. This vastly better than the usual “Share This … Posted on … under …” description that is often used. If a post has an excerpt it is used, but not if you specify an explicit description.

Keywords

All in One SEO Pack can generate them from your categories (this was the old way of tagging your posts in wordpress) or from Ultimate Tag Warrior or, starting with Wordpress 2.3, the built-in tagging system. Using your categories is optional, the rest is auto-detected and used if there.

Duplicate Content

You can have “noindex” and the like generated for archive-, category- and tag pages if you seem to have trouble with duplicate content.

Pricing: Free
Requirements: -
Source: http://wp.uberdose.com/2007/03/24/all-in-one-seo-pack/