WereWP

WordPress Visual Cheat Sheet – woorkup.com
This cheat sheet (5 pages) contains the full reference guide to WP Template Tags with detailed descriptions and sample code.

WordPress: Output Clean and Valid HTML Code
Here is a little function which automatically filters the content coming from the post. The results are amazing, htmLawed cleans and filters all the bad [...]

Theme

A New Professional Theme by WPZOOM
A new dark Premium Wordpress theme, for those of you who are looking for a nice Portfolio theme, it can be interesting.

Plugin

Redirection – Manage 301 redirections without modifying Apache | Urban Giraffe
This plugin may not be useful to everyone as it can be rplaced by other methods that do not [...]

12 Essential Security Tips and Hacks for WordPress
A great list to help you improve security on your WordPress blog.

WordPress For Dummies: Optimizing WordPress Settings | Weblog Tools Collection
A good list of what everyone should do when starting up a new WordPress blog. These are essential steps in my opinion!