On average, when you ask someone to perform a task on a site, they cannot do it. It's not their fault; it's the designer's fault.

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

A bad website is like a grumpy salesperson.

Users spend most of their time on other sites. This means that users prefer your site to work the same way as all the other sites they already know.

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.

Good information architecture makes users less alienated and suppressed by technology. It simultaneously increases human satisfaction and your company's profits. Very few jobs allow you to do both at the same time, so enjoy.

Users are not designers.