Landing Page Design Trends for Selling Digital Products

http://speckyboy.com/2013/05/09/landing-page-design-trends-for-selling-digital-products/

71* Things to (A/B) Test

http://blog.optimizely.com/2013/04/30/71-things-to-ab-test/

50 Beautiful Mobile UI Design with Amazing User Experience

http://hopflow.com/#!/u/409/h/2697920

FROONT - Responsive web design, the visual way

http://froont.com/

Wimbiya - A free bar for website owners that helps you create a personal experience for every visitor.

http://wibiya.conduit.com/

Virtual User Interface Design Creates Smarter Physical Objects

http://www.bitrebels.com/technology/virtual-user-interface-design-innovation/

Briefs - interactive app demos for visual thinkers

http://giveabrief.com/

Webydo - Website Design Software for Webdesigners

http://www.webydo.com/

Persona collection on Flickr

http://www.flickr.com/photos/jasontravis/sets/72157603258446753/

Talking Layers | Revolutionizing all commenting systems

http://talkinglayers.com/

on Service Design

on Service Design from Patrick Quattlebaum

Cross-Cultural Considerations for User Interface Design

http://www.humanfactors.com/downloads/apr13.asp

Optimizely: A/B testing software you'll actually use

https://www.optimizely.com/