If you have an interest in web usability then you should check out Jacob Nielson's AlertBox newsletter.

This weeks topic on Business-to-Business usability is particularly relevant to i-Dialogue Customer Portal (there's also a 282 page PDF report you can purchase). Jacob's approach is more quantifiable and scientific than most other web usability specialists, but I tend to agree with many of his principles and conclusions.

In fact, Jacob's Top 10 Web Design Mistakes of 2005 challenged us to revisit i-Dialogue's design and add a few new features (namely dynamic fonts, "Best Bet" search results, and auto-focus on form fields).