Evidence-based usability guidelines

Tonight I attended a great presentation by the leads on the usability.gov project. (Despite the .gov domain, this is not a government-specific site.)

They really sold me on the use of evidence-based guidelines for making site design decisions. One of the many interesting points: practitioners tend to view their own experience-based usability guidelines as being strongly supported by research-- even if the research isn't there. We can point to research-based guidelines to resolve the inevitable conflicts that arise when many different parties (internal and external) bring differing design experiences to a project.

Currently there are 50 guidelines on the usability.gov site; by the end of this year 200+ will be posted. Awesome.