JavaScript Performance Tips & Tricks

http://moduscreate.com/javascript-performance-tips-tricks/

Great iOS development newsletter (subscription free)

http://iosdevweekly.com/

Nice libraries and SDKs for your native apps

http://www.cocoacontrols.com/

Another nice site for mobile SDKs

http://www.binpress.com/

Nice site for free or not mobile SDKs

http://www.verious.com

CSS3 images created without Photoshop top 10

http://www.creativebloq.com/css3/css-images-712440

10 Useful Web Applications For Designers

http://www.designer-daily.com/10-useful-web-applications-for-designers-27691