Even the best designers produce successful products only if their designs solve the right problems. A wonderful interface to the wrong features will fail.

In the attention economy, anyone trying to connect with an audience must treat the user's time as the ultimate resource.

What we learned is money doesn't grow on trees.

...pay attention to what users do, not what they say.

Even better than good error messages is a careful design which prevents a problem from occurring in the first place. Either eliminate error-prone conditions or check for them and present users with a confirmation option before they commit to the action.

Popularity is the product of two factors: (a) how compelling material you offer, and (b) how easy it is to access it. Host free pirated movies and users will flock to the site, even if it's difficult to use.

The more users' expectations prove right, the more they will feel in control of the system and the more they will like it.