Ryan Boren’s introduction on WP’s Custom Headers API is a good start, and here’s a lovingly detailed article on that same subject on Blog, the Magazine. If you’re going to add this feature on your theme, you want to read this. Seriously.
A tutorial on adding description to your WordPress 3.0 menu links. Might be a nice update for Pico.
Have your own short domain name for the purpose of shortlinking? Here’s an easy way to combine that with your WordPress install.
GWT is a great, frequently updated features like showing you search queries volume, malware and crawl error diagnostics and links to your site. If you don’t use it yet, you probably need to. This will help you get started.
I would recommend this either if you want more flexibility or to learn how to code a contact form.
This attack is very interesting because it is not visible to the normal user and the spam (generally about Viagra, Nexium, Cialis, etc) only shows up if the user agent is from Google’s crawler (googlebot). Also, the infection is a bit tricky to remove and if not done properly will keep reappearing.
Typography nerd rejoice. Works in Safari and Chrome, also used by Firefox by default for texts above 20px.
An updated (written in April 2010), well researched, CC-licensed Web safe fonts cheat sheet, available both in low-res PNG and high-rest PDF. Even the article is useful as well.
The Timaru Mental Health Support Trust website, made for charity by Team USA (comprised by web superstars like Jason Santa Maria, Dan Mall, Liz Danzico and Automattic’s John Ford) during the FullCodePress competition, is actually a clever child theme of 2010.
More recap by JSM, Daniel Mall, and Liz Danzico.
The simpler way to code comment form (once you understand how hooks and filters work).
I like it, I think it’s short and easy to understand.