2. An In-Depth Understanding of WordPress Hooks
3. Enhanced Pagination Design in WordPress Entries
4. Next and Previous Posts With Thumbnails
5. 5+ Ways to Add Google Analytics to WordPress
6. Front-End Author Listing And User Search For WordPress
7. QueryPosts.com – an alternative WordPress code reference
9. Using the Power of the .htaccess File to Improve WordPress SEO
10. How to automatically add rel=”lightbox” to all images embedded in a post
11. Using Conditional Tags to Supercharge Your Blog
12. WordPress dashboard hacks for developers and freelancers
13. Easily Customize WordPress’ Default Functionality
14. How to define a default post thumbnail
15. Rewriting URLs In WordPress: Tips And Plugins
16. Do-It-Yourself Caching Methods With WordPress
17. WordPress dashboard hacks for developers and freelancers
18. How to add .pdf support to the WordPress media manager
19. Publishing to WordPress from the Desktop, Even Offline, Using the XML-RPC Protocol
20. How to create custom dashboard help messages
21. Convert Your WordPress Theme to HTML5
22. Integrating Disqus Into WordPress
23. 40+ Free Responsive WordPress Themes
24. Pluginception – A WordPress plugin that lets you quickly create new plugins
25. Making Advanced Customizations to the WordPress Roots Theme
I would like to add one – if you don’t mind! It’s a place to find responsive themes (which is becoming popular recently) – http://wpresponsive.org. I think the mobile plugins can be a handful for those worried about SEO issues and problems with how it renders on mobile devices.