“Everyone from users to entrepreneurs to advertisers loves the mobile category because those products are always with us, always on, and instantly accessible. But these opportunities are also design constraints: Mobile screens are small, driven by touch, and often connected to spotty networks. Which is why companies like Facebook, Google, PayPal, and countless startups taking the plunge into mobile-first design quickly realize that designing for mobile is not the same as designing for the desktop PC. Our PC-driven instincts are often very wrong for mobile. Yet they’re so deeply ingrained, we apply them anyway. That’s why I want to share these common mistakes.”

(Luke Wroblewski a.k.a. @lukew ~ Wired)