Google XML Sitemaps

This plugin will generate a special XML sitemap which will help search engines like Google, Bing, Yahoo and Ask.com to better index your blog. With such a sitemap, it's much easier for the crawlers to see the complete structure of your site and retrieve it more efficiently. The plugin supports all kinds of WordPress generated pages as well as custom URLs. Additionally it notifies all major search engines every time you create a post about the new content.

Installation:

1. Upload the full directory into your wp-content/plugins directory
2. Use your favorite FTP program to create two files in your WordPress directory (that's where the wp-config.php is) named sitemap.xml and sitemap.xml.gz and make them writable via CHMOD 666.
3. Activate the plugin at the plugin administration page
4. Open the plugin configuration page, which is located under Options -> XML-Sitemap and build the sitemap the first time. If you get a permission error, check the file permissions of the newly created files.
5. The plugin will automatically update your sitemap of you publish a post, so theres nothing more to do 

Download  Google XML Sitemaps
This release is not compatible with the new multisite feature of WordPress 3.0 yet. The plugin will remain inactive as long as this feature is enabled.
This release is compatible with all WordPress versions since 2.1. If you are still using an older one, use version 2.7.1 instead.

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AjaxChat Plug-in

Provides a simple chat system integrated into your blog. It adds a bar with a height of 20 pixels across the bottom of the browser's viewport. The div for the bar is position:fixed. This means that older browsers, Internet Explorer 6, for instance, may not display the bar at all.

Installation:

1. Upload ajaxchat directory to the /wp-content/plugins/ directory
2. Activate the plugin through the 'Plugins' menu in WordPress

Demo here.       Download AjaxChat here

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Paginator 3000

This is a pagination plugin that based on the idea of scrolling. Your pagination will not be split into parts, it will display all the pages but you can easily access all page by the scroll bar.
Demo here

Installation:

1. Open wp-content/plugins folder
2. Put paginator folder into the wp-content/plugins folder
3. Activate Paginator plugin
4. Paste <?php if(function_exists('wp_paginator')) { wp_paginator(); } ?> anywhere in index.php or footer.php of your theme. Note: if you want the paginator to also be used for search results, in categories, and for tagged posts, the easiest thing to do is to paste <?php if(function_exists('wp_paginator')) { wp_paginator(); } ?> into your footer.php, rather than index.php
5. To configure Paginator go to 'WP-Admin -> Settings -> Paginator'
6. To change CSS style of Paginator, edit /wp-content/plugins/paginator/skin/paginator3000.css

Download Paginator Here

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