The 10 best known and mostly applied usability heuristics are those derived by Jacob Nielsen . The latest set of usability heuristics can be found by browsing the WWW for instances of 'usability' and 'heuristics'. Ergonomic criteria for the evaluation of human computer interfaces. Usability Inspection Methods . These and more general readings can be found on our references page.
Good evaluators are experts.
Experts are persons who have considerable knowledge about user interface standards, design guidelines, and they know examples of good and bad design. Due to the fact that experts have been involved in the evaluation of numerous user interfaces, they are able to clearly identify advantages and disadvantages of user interface features. Experts have developed an implicit baseline against which they evaluate and compare new user interfaces. In general yes. But everyone should collect his on own, more specific data to determine the optimal number of evaluators for specific development projects.