Summary
The HED/UT is developed to both address hedonic aspects of product/website interaction and the utitility and usability aspects. HED/UT is an attitude measure from the consumer behaviour literature, and consists of 12 items measuring hedonic value, and 12 items measuring utilitarian value of a service or concept.
Strengths
several studies conducted around reliability and application domain for this scale
+ used in different settings
Weaknesses
same drawbacks as with all subjective scales; sensitivity is sometimes a problem (results then do not show any difference between conditions or stimuli)
References describing the method
http://is2.lse.ac.uk/asp/aspecis/20030166.pdf
K. E. Voss, E. R. Spangenberg, and B. Grohmann. Measuring the hedonic and utilitarian dimensions of consumer attitude. Journal of Marketing Research, 40(3):310 — 320, 2003.