Jakob Nielsen, Ph.D., is a retired principal and co-founder (with Dr. Donald A. Norman) of the Nielsen Norman Group. Jakob established the "discount usability engineering" movement for fast and cheap improvements of user interfaces and invented the heuristic evaluation method.
Having a specialized usability person is best, but smaller design teams can still benefit when designers do their own user testing and other usability work.
Having a good designer doesn't eliminate the need for a systematic usability process. Risk reduction and quality improvement both require user testing and other usability methods.
Application commands can be presented as buttons or as links, which offer more room for explanation. For primary commands, however, buttons are still best.
You get the same insights regardless of where you conduct user testing, so there's no reason to test in multiple cities. When a city is dominated by your own industry, however, you should definitely test elsewhere.
One line of text shows a page's location in the site hierarchy. User testing shows many benefits and no downsides to breadcrumbs for secondary navigation.
Making users suffer a drop-down menu to enter state abbreviations is one of many small annoyances that add up to a less efficient, less pleasant user experience. It's worth fixing as many of these usability irritants as you can.
Several usability findings lead directly to higher sales and increased customer loyalty. These design tactics should be your first priority when updating your website.