Color: Handy color pickers for designers.
Design: Mobile UI patterns.
Freelancing: The pros and cons of doing freelance work.
Instagram: Export and download your photos using Instaport.
jQuery Mobile: A tutorial on designing "native" mobile applications.
Klout: Methods and approaches for increasing your score.
PhoneGap: A tutorial on how to get your mobile application into the app store.
WordPress: 29 hacks/tweaks to improve posts and pages.