I’m bookmarking all of these from Joost de Valk’s awesome WordPress newsletter. Highly recommended if you administer WordPress sites.
Common WordPress Multisite Problems and Solutions. WordPress 3.0 is multi-user out of the box, so every WordPress blog can now host multiple blogs. I’ve got an idea for using that at work if I can find the time.
Lessons Learned From Maintaining a WordPress Plug-In
Add a Facebook “Like” button to your WordPress blog
16 Vital Checks Before Releasing a WordPress Theme. Here’s the easiest one.
11: Enable Custom Backgrounds
This is a new feature in WordPress 3.0, and it’s also the easiest to implement. It’s literally one line:
1. add_custom_background();
add_custom_background();
That’s it! Users can now choose any custom background they want.