On the Web, usability is a necessary condition for survival. If a website is difficult to use, people leave. If the homepage fails to clearly state what a company offers and what users can do on the site, people leave. If users get lost on a website, they leave. If a website's information is hard to read or doesn't answer users' key questions, they leave. Note a pattern here?

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

Designers are not users.

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

Inadequate use of usability engineering methods in software development projects have been estimated to cost the US economy about $30 billion per year in lost productivity.

Progressive disclosure defers advanced or rarely used features to a secondary screen, making applications easier to learn and less error-prone.

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.