Plugin allowing you to turn on gravatars for your site. For those which do not know about gravatars - this is icons which are linked to your identity account at the site gravatar.com, thus in your blog you and your users and guests could have their own gravatars
http://skippy.net/gravatars/

five-wordpress-cms-enabling-plugins - really good article on the plugins allowing you to consider wordpress as the real CMS for your site
http://blazenewmedia.com/articles/five-wordpress-cms-enabling-plugins/

Trackbacks
Explanation what is it and how to turn it on for your blog. Very usefull.
http://codex.wordpress.org/Template_Tags/trackback_rdf

PingBack

Pingback lets you notify the author of an article if you link to his article (article on a blog, of course). If the links you include in an article you write on a blog lead to a blog which is pingback-enabled, then the author of that blog gets a notification in the form of a pingback that you linked to his article.

Trackback

Trackback helps you to notify another author that you wrote something related to what he had written on his blog, even if you don’t have an explicit link to his article. This improves the chances of the other author sitting up and noticing that you gave him credit for something, or that you improved upon something he wrote, or something similar. With pingback and trackback, blogs are interconnected. Think of them as the equivalents of acknowledgements and references at the end of an academic paper, or a chapter in a textbook.

How to block or allow Googlebot?
http://www.google.com/support/webmasters/bin/answer.py?answer=40364&ctx=sibling

Block or remove pages using meta tags
http://www.google.com/support/webmasters/bin/answer.py?answer=61050&ctx=sibling

Resource devoted to the information on robots.txt file
www.robotstxt.org

How do I add my site to Google’s search results?
http://www.google.com/support/webmasters/bin/answer.py?answer=34397&ctx=sibling

What’s an SEO? Does Google recommend working with companies that offer to make my site Google-friendly?
http://www.google.com/support/webmasters/bin/answer.py?answer=35291&ctx=sibling

Google searches more sites more quickly, delivering the most relevant results.
http://www.google.com/technology/index.html

Search_Engine_Optimization_for_Wordpress - “native” wordpress team built article. Great. Outstanding. With lots of references to the very useful plugins. Must read!
http://codex.wordpress.org/Search_Engine_Optimization_for_Wordpress

Have not used this plugin but take a look at the list of its abilities:
1. Edit-in-place
2. Ability to backup write panels and import them
3. Date variables will be sortable via query_posts
4. A powerful query_posts function that will allow you to use FreshPost variables
5. Write panel organization (order of fields/panel)
6. Grouping fields together in the write page
7. A new admin theme for FreshPost
http://freshout.us/goodies/fresh-post-for-wordpress-wordpress-cms/

date-exclusion-wordpress-plugin - may be usefull ig you would like to exclude dates from the wordpress pages. it could be valuable for search engines optimization!
http://www.dailyblogtips.com/date-exclusion-wordpress-plugin/

Mod of wordpress having only functionality for not expirienced editors. Still - there are another plugins allowing you to controll all the abilities of the certain users. Still could be usefull to someone.
http://pixopoint.com/simplecms/

WordPress Trackback Tutorial
http://www.optiniche.com/blog/117/wordpress-trackback-tutorial/
http://faq.wordpress.com/2006/05/11/how-do-i-send-a-trackback/

Sending Pings and Trackbacks
http://www.tamba2.org.uk/wordpress/ping/

Using_Permalinks
http://codex.wordpress.org/Using_Permalinks

permalinks-migration-plugin - could be usefull if you decided to migrate to another permanent links structure, but would like to save the old-style pages accessible for the external resources. Potentionally plugin I would install for zmicer.com to migrate into permanent links style of page links constructing.
http://www.deanlee.cn/wordpress/permalinks-migration-plugin/

tutorial-automatic-sitemap-in-wordpress - three cases is considered. Must to read.
http://www.jimwestergren.com/tutorial-automatic-sitemap-in-wordpress/

seo-for-wordpress-blogs
http://www.jimwestergren.com/seo-for-wordpress-blogs/

SEO optimization
http://www.tomrafteryit.net/search-engine-optimisation-step-1-identification-of-aims/
http://www.tomrafteryit.net/search-engine-optimisation-step-2-benchmarking/
http://www.tomrafteryit.net/search-engine-optimisation-step-3-keyword-and-keyphrase-research/

using-headspace-wordpress-plugin-for-seo -SEO in action.
http://www.webhelpermagazine.com/2007/10/using-headspace-wordpress-plugin-for-seo/

WordPress SEO - The beginner’s guide
http://www.joostdevalk.nl/wordpress-seo/

Hi, Guys!

This post is bringing to you lots of links and insights on wordpress with the small description for each of them. I was dealing with running new resource on wordpress, updated my knowledge on it, and thus these information was taken and eaten by me. So as it is said in german Guten Appetit!

Themes

100-excellent-free-high-quality-wordpress-themes

http://www.smashingmagazine.com/2008/01/08/100-excellent-free-high-quality-wordpress-themes/

Great theme I was considering as a candidate for the resource I was setting today
http://test.wpthemesfree.com/?preview_theme=ygo-greenary-10

The magazine-portal style theme. I really love it and advice to be used by your blogs.
http://justintadlock.com/archives/2007/12/09/structure-wordpress-theme

Love them as well! Take an attention to the hemingway theme - really cool!
http://test.wpthemesfree.com/?preview_theme=neat-light
http://test.wpthemesfree.com/?preview_theme=hemingway-019

Plugins

This plugins allows to sett he concrete category posts from which you would see on the homepage (frontpage) of your resource
http://wordpress.org/extend/plugins/front-page-cats/

This information would be usefull for those which decided to understand how dynamic bars are done, and which options present for you
http://automattic.com/code/widgets/api/

Here you could download plugin for constructing nice contact forms - like it is done here http://zmicer.com/?page_id=143. This page contains lots of documentation so just download it, and go ahead. At least for me it worked from the first time
http://www.dagondesign.com/articles/secure-form-mailer-plugin-for-wordpress/

Post of how to hide pages in wordpress. Firstly I followed its advice, still then found another nice plugin allowing to set checkbox when posting the page. Second link in this section is on that!
http://realiventblog.com/2007/04/04/how-to-hide-pages-in-wordpress/
http://wordpress.org/extend/plugins/exclude-pages/

Really magazine

article in Russian teaching to migrate wordpress instance/installation to another hosting without troubles with db etc.
http://paradigm.ru/2008/02/26/wp-migration/

Project, integrating wordpress and phpbb. I tried it locally - it works fine. I was impressed by the possibility to migrate and map users from wordpress and the forum in one click. Still I have one question opened - if this would be done automatically when new users would be registered
http://www.wp-united.com/features
And here is an example of what could be done using this software http://www.thepufferforum.com/forum/
Please have a look at the galerie of wp-united site too.

Article on how to enable sending email via wordpress. Extremelly usefull. The third proposed solution really helped me.
http://ebestagent.com/wordpress-your-host-may-have-disabled-the-mail-function-error/

Post on the category templates. Contains really usefull advice on: 1) Excerpts vs. Full Posts at the homepage, 2) What categories do you show to the visitors - means excluding some certain category 3) Text Displaying Only on First Page of Archive 4) displaying category name 5) Static Text Above Posts
http://codex.wordpress.org/Category_Templates

SEO of wordpress using handy plugins. This is second part of article
http://realiventblog.com/2007/03/08/better-seo-for-your-website-using-plugins-and-tags-part-2/

Wordpress Plugins & Tutorials: Your Pick. Including articles

Separate users’ comments and admin’s comments.
Comment Styling in Wordpress and How-to style WordPress author comments. In the default of most themes, all comments look the same. There have been ways of changing the appearance before using plugins and hacks - and this is more of the same. Hopefully though it’ll give you some extra flexibility.
http://www.tamba2.org.uk/wordpress/commentstyling/
http://5thirtyone.com/archives/774

Paginate your articles.
Styling Page-Links. Did you know you could split a single post up into different web pages? Using the Next-Page Quicktag from the Write Post Panel, you can break a single post up into different web pages.
http://codex.wordpress.org/Styling_Page-Links

Use comment highlighting.
Author Comment Highlighting and Author Highlighting Through Theme Options provide information about styling author’s comments.
http://www.nyssajbrown.net/2007/06/19/wordpress-tips-tricks-author-comment-highlighting/
http://www.nyssajbrown.net/2007/06/28/wordpress-tips-tricks-author-highlighting-through-theme-options/

How to create WordPress theme from scratch: a series of 16 articles, which shows how to create WordPress themes from the very beginning to the very end. (Small Potato)
http://www.wpdesigner.com/2007/02/19/so-you-want-to-create-wordpress-themes-huh/

How-to turn visitors into returning visitors: various requisite Wordpress plugins to make visitors feel at ease.
http://blogosquare.com/2007/06/07/how-to-turn-visitors-into-returning-visitors/

The proper way to write code in your blog posts: how to write code in posts so that the blog doesn’t break when displaying them.
http://blogosquare.com/2007/04/21/the-proper-way-to-write-code-in-your-blog-posts/
All that and much more is to be found here
http://www.smashingmagazine.com/2007/06/29/wordpress-plugins-tutorials-your-pick/

Not on wordpress, still usefull in this inductry

domain-tools-and-articles-about-domain-names
http://www.smashingmagazine.com/2007/06/28/domain-tools-and-articles-about-domain-names/

(X)HTML template systems in PHP
http://www.smashingmagazine.com/2006/10/01/html-template-systems-in-php/

Creating A Successful Online Portfolio
http://www.smashingmagazine.com/2008/03/04/creating-a-successful-online-portfolio/

google-adsense-facts-faqs-and-tools
http://www.smashingmagazine.com/2007/03/22/google-adsense-facts-faqs-and-tools/

google-pagerank-what-do-we-really-know-about-it
http://www.smashingmagazine.com/2007/06/05/google-pagerank-what-do-we-really-know-about-it/

complete-list-of-best-seo-tools
http://www.smashingmagazine.com/2006/09/22/complete-list-of-best-seo-tools/

developers-alarm-200-hotkeys-to-boost-your-productivity
http://www.smashingmagazine.com/2007/07/20/developers-alarm-200-hotkeys-to-boost-your-productivity/