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Thanks to @TechNorth (jeff j)

"How many licks does it take to get to the center of a Tootsie Roll Pop?" well developed simple experiment to use when refreshing the techniques and methodologies of the scientific method;

Rating systems are something I find myself discussing fairly frequently. Partly because the idea shows up in a lot of projects and partly because I usually end up relating it to the rules people set for themselves within different social networks. shared on Plurk

testing against human factors, creating use cases, and observing focus groups can prove to be a costly endeavor for even the largest of companies. Now, there's a cost-effective means of seeing how usable your pages are: Userfly, a simple way to test your site's usability for free - with one line of code.