What if Jakob Nielsen had a blog?

Should Designers and Developers Do Usability?

At my seminars, I'm often asked whether designers and developers can perform usability activities or whether those activities should be left to dedicated usability specialists. The answer depends on your circumstances; there are several important pros and cons to having designers and developers branch out into usability.

http://www.useit.com/alertbox/own-usability.html

Change vs. Stability in Web Usability Guidelines

As Web usability testing enters its 14th year, it's worth asking how early results have held up to recent user research.

10 years ago, I wrote an article on the changes in Web usability from 1994 to 1997. A few of my original findings were no longer valid a mere 3 years after they were issued. But most of the 1994 guidelines held true in 1997 -- and they're still correct today.

http://www.useit.com/alertbox/guidelines-change.html